Sentry GXTW5 True Wireless Gaming Earbuds

1. Using Your True Wireless Earphones

English

Charge the earbud and case first. Ensure the charging case and earbuds are fully charged.

STEP 1: Turn off the Bluetooth function from your music device (e.g., mobile phone or music device).

STEP 2: Take out the earbuds from the charging case after they have been charged. The earphones will automatically turn on. You will hear "Power On". Wait 5 seconds for both earbuds to connect to each other. After the dual earbuds have connected, you will hear a tone indicating successful pairing. The status light on the Right earbud will flash blue and red alternately, while the Left earbud will flash blue very slowly.

STEP 3: Turn on the Bluetooth function of your mobile phone or audio device. Search and select "BT899" on your device and connect. When the earbuds are connected successfully, you will hear "Connected", and the earbuds will have a very slowly blinking blue light.

If you turn off the Bluetooth function on your mobile phone, you will hear "Disconnected". The status light on the Right earbud will flash blue and red alternately, while the Left earbud will flash blue very slowly. The pairing mode between both earbuds and the device will remain for approximately 5 minutes. After that, the earbuds will automatically turn off if no device connection is made within 5 minutes, and you will hear "power off".

*After initial setup, both earphones will auto-pair with your device directly. You can skip Steps 1 and 2.

*Refer to Fig 1 for earbud placement in the case.

2. Button Function

On/Off:

• Turn on: Long press both left and right earphones for 3 seconds.
• Turn off: Long press the top button on either the left or right earphone for about 6 seconds.

Answer / Hang Up:

• When there is an incoming call, short press the top button on the left or right earphone to answer.
• During a call, the earphones will have a slowly flashing blue light.
• Short press the top button on the left or right earphone to end the call.
• *When playing music and an incoming call occurs, music will auto-pause and resume playback after the call ends.

Reject / Call Back:

• When a call comes in, long press the left or right earphone for about 2 seconds to refuse the call.
• Triple-click the right earphone to redial the last called number.
• Triple-click the left earphone to activate the voice assistant.

Play / Pause Music:

• To pause music, short press either the left or right earbud.
• To resume playback, short press either the left or right earbud.

If one earbud runs out of battery, the other will continue to work until it also runs out of power.

Last / Next Song Control:

• When playing music, double-press the left earphone to switch to the previous song.
• Double-press the right earbud to switch to the next song.

Charging the Case and Earbuds

Charge the Charging Case (Fig 2):

The charging case charges the earbuds. It is important to recharge the case. Insert the provided USB charging cable to charge the case using a USB power adapter.

The LED light on the case will flash while charging. When fully charged, the LED lights will remain solid.

Charging the case takes approximately 5 hours, though charging time may vary based on battery status.

Note: When the charging case has no charge left, it will flash to indicate low battery and then turn off completely.

Charge the Earphones (Fig 1):

The charging case must be fully charged and have sufficient power to charge the earbuds. Place the earbuds into the correct positions in the charging case (Fig 2) for charging.

Turn off the earbuds by long-pressing the top button of both earbuds (Fig 1) for 6 seconds before placing them into the case.

If the earbuds are not placed securely, they may not charge. Remove and re-insert them. Ensure the lid is properly closed for charging to begin. Large earpads might obstruct the case closure and may need to be removed.

When the earphones are charging correctly, the LED lights on the earphones and the charging case will turn on and remain solid. When the earphones are fully charged, the LED lights will turn off.

When earphones are low on battery, you will hear a tone indicating low battery, and the earphone LEDs will flash quickly. When the earphones run out of battery, you will hear "power off", and they will automatically turn off.

Note: If the charging case runs out of battery, it is crucial to turn off both earphones before charging them in the case. (Turn off by pressing both earbuds (Fig 1) for 6 seconds. If the charging case has no power, the earbuds will not auto-turn off when placed back in the case. Therefore, manually turn off the earbuds by pressing both for 6 seconds simultaneously before returning them to the case. Charge the charging case (Fig 2) to enable earbud recharging.

3. Frequently Asked Questions

Bluetooth Earbuds Cannot Turn On?

1. Check if the earbuds have power. If not, fully charge both earbuds before turning them on. (Also charge the charging case to ensure it has enough power to charge the earbuds).
2. Ensure the earbuds are properly charged by placing them securely into the charging case (Fig 2).
3. Turn on the earbuds by long-pressing both earbuds for 3 seconds (Fig 1).

Bluetooth Earbuds Signal is Unstable?

1. Restart the earbuds by turning them off and then on. Long press (Fig 1) for 6 seconds to turn off, and long press for 4 seconds to turn on again.
2. Check the compatibility and calling communication quality of your mobile phone. The playback device should be no more than 1.5 meters (4 feet) from the earbuds.
3. The distance between both earbuds should be no more than 0.5 meters (2 feet).
4. Interference from other devices or crowded areas may cause signal instability. Move to another area to see if it improves.

Why Can't I Hear Voice / Playback?

1. Check if your playback device volume is on or muted.
2. Ensure the Bluetooth earbuds and phone are connected properly. Resetting the device may be necessary (see below on how to reset).
3. Check the distance between the earbuds and the phone.

Reset:

If the earbuds are not pairing correctly or continue to have issues, delete them from your phone's Bluetooth settings. Then, follow Steps 1-3 on the first page to re-pair your earbuds.

If earbud functions are not working, reset the earbuds by long-pressing both earbuds (Fig 1) for about 8 seconds. Then, follow Steps 1-3 on the first page to re-pair your earbuds.

If the earbuds stop charging after some time, use a dry cotton swab to clean the bottom charging points on the earbuds and the inductive pins on the charging case to remove dust and sweat.

Specifications

• Model: BT899
• Bluetooth Version: 5.3
• Power Input: DC 5V
• Earphone Working Time: About 6 hours at 50% volume
• Earphone Battery Capacity: 40mAh + 40mAh = 80mAh
• Charging Case Battery Capacity: 400mAh
• Supported Profiles: a2dp, avctp, avdtp, avrcp, hfp, spp, smp, att, gap, gatt, rfcomm, sdp, l2cap

Limited 90-Day Warranty

Sentry warrants this product to be free from defects in materials and workmanship for 90 days from the date of original purchase. This warranty does not cover damage resulting from accident, abnormal use, misuse, or neglect. Defective products will be replaced if returned to an authorized Sentry dealer or directly to Sentry at: PO Box 885, One Bridge Street, Hillburn, NY 10931. Please enclose a $5 check for return shipping.

The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. Sentry Industries Inc. uses these marks under license. Other trademarks and trade names belong to their respective owners.

Sentry Industries Inc. declares that radio equipment BT899 complies with Directive 2014/53/EU. The EU declaration of conformity is available at https://sentryindustries.com/european-declaration-of-conformity/.

Conformity with Directives:

This product is CE marked to denote conformity with Directives 73/23/EEC (low voltage) and 89/336/EEC (Electromagnetic Compatibility), as amended.

Environmental Protection:

Waste electrical products should not be disposed of with household waste. Please recycle where facilities exist. Check with your Local Authority or retailer for recycling advice.

Supplier's Declaration of Conformity & FCC Compliance Information:

47 CFR Part 15.21, 15.105(b)

Sentry Bluetooth Responsible Party:

SENTRY INDUSTRIES INC
ONE BRIDGE STREET, HILLBURN, NY 10931, USA
TEL +1 8457532910

FCC Compliance Statement:

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

FCC ID: 2ACP4LBT899 Model #: BT899

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

Warning: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

USB Type-C® and USB-C® are registered trademarks of USB Implementers Forum.

Charging Your Device

Only use a power adapter compliant with applicable country regulations and international and regional safety standards. Using non-compliant adapters could pose a risk of death or injury.

Avoid prolonged skin contact with the charging cable and connector when connected to a power source, as it may cause discomfort or injury. Do not sleep or sit on the charging cable or connector.

WARNING: To prevent possible hearing damage, do not listen at high volume levels for extended periods. For traffic safety, do not use earphones while driving or cycling.

If you have a pacemaker or other electrical medical devices, consult your physician before using the product.

Choking Hazard: The product, packaging, and some accessories may present a choking hazard to small children. Keep these items away from small children. Bags or small parts may cause choking if ingested.

Danger: Improper battery replacement may cause an explosion and injury.