Siindoo JH919 Wireless Bluetooth Headphones User Manual

1. Introduction and Overview

The Siindoo JH919 Wireless Bluetooth Headphones offer a high-fidelity stereo sound experience, driven by 40mm neodymium drivers and an ear cushion design that provides immersive audio and a well-sealed environment for your ears. These headphones feature a foldable design for portability, a built-in microphone for hands-free communication, and a long-lasting battery for extended use.

Key features include:

Wireless Bluetooth 5.1 connectivity for stable and fast transmission.
Super Bass sound quality with enhanced low-frequency audio.
Foldable and retractable design for easy storage and transport.
Built-in microphone for calls and voice commands.
Three EQ Modes (Pop, Bass, Vocal) for personalized sound.
Comfortable memory-protein ear cushions and adjustable headband for long-term wear.
Dual mode: Wireless Bluetooth and wired via 3.5mm audio cable.
400mAh rechargeable battery providing up to 28 hours of music playback.

2. Package Contents

Please check the box for the following items:

1 x Siindoo JH-919 Headset
1 x 0.3m Type-C Charging Cable
1 x 1.2m Audio Cable (3.5mm Jack)
1 x User Manual

Siindoo JH919 Headphones and accessories in box — Image: Siindoo JH919 Headphones and included accessories.

3. Headphone Overview

Familiarize yourself with the different parts and controls of your Siindoo JH919 headphones.

Diagram of Siindoo JH919 headphone parts and controls — Image: Detailed diagram of the headphone, showing headband, earcups, buttons, and ports.

Product Function Instructions:

'+' Button: Volume up / Next song
MFB Button: Multi-Function Button (Play/Pause, Answer/End Call)
'-' Button: Volume down / Previous song
Bluetooth Indicator: LED light indicating Bluetooth status
Power On/Off & EQ Button: Controls power and switches EQ modes
3.5mm Jack: For wired audio connection
USB Type-C Charging Port: For charging the headphones
Microphone: For calls and voice commands

Telescopic folding mechanism of the headphones — Image: The telescopic folding mechanism allows for flexible adjustment and easy portability.

Closed earmuffs for comfortable noise shielding — Image: Soft, closed earmuffs provide comfortable noise shielding.

All-in-ear design for comfortable long-term wear — Image: The all-in-ear design is skin-friendly, comfortable, breathable, and lightweight for all-day wear.

Lightweight design for stylish colored headphones — Image: Ergonomic lightweight design ensures comfort without extra burden.

Headphones showing folding capability — Image: The headphones feature a light and foldable design, saving space and offering flexibility.

Diagram of Bluetooth 5.1 chip for lossless sound quality — Image: The new upgraded Bluetooth 5.1 chip ensures lower loss, more stable connection, and faster transmission for lossless sound quality.

Headphones with a clock showing 266 hours standby time — Image: Enjoy up to 28 hours of playtime and 266 hours of standby time.

Product features icons including smart noise reduction, Bluetooth 5.1, high capacity battery, telescopic fold, 39.7mm unit, exercise prevent sweat, comfortable to wear, compatible with, Bluetooth and wired — Image: Overview of product features including smart noise reduction, Bluetooth 5.1 chip, high capacity battery, telescopic fold, 39.7mm unit, sweat resistance, comfortable wear, compatibility, and dual Bluetooth/wired connection.

4. Setup Instructions

4.1 Power On/Off

Turn On: In power-off status, press and hold the Power On/Off button (5) for approximately 2 seconds. The blue light will illuminate for about 2 seconds, then the blue and red lights will blink alternately, indicating the headphones have entered pairing mode.
Turn Off: In power-on status, press and hold the Power On/Off button (5) for approximately 3 seconds. The indicator light will then turn off.

4.2 Bluetooth Pairing

Ensure the headphones are in pairing mode (blue and red lights blinking alternately).
Turn on the Bluetooth function on your mobile phone, PC, tablet, or other device.
Search for the pairing name "siindoo-H1" in the Bluetooth device list.
Select "siindoo-H1" to connect. Once successfully paired, the blue indicator light will blink every 6 seconds.

Bluetooth pairing screen showing siindoo-H1 connected — Image: Example of Bluetooth pairing on a mobile device, showing 'siindoo-H1' as connected.

Video: Unboxing and basic feature demonstration of the Siindoo JH919 headphones, including power on, button functions, and pairing.

5. Operating Instructions

5.1 Music Playback

Volume Up: Click the '+' button (1).
Volume Down: Click the '-' button (3).
Next Song: Press and hold the '+' button (1) for approximately 2 seconds.
Previous Song: Press and hold the '-' button (3) for approximately 2 seconds.
Play/Pause: Click the MFB button (2).

5.2 EQ Mode

The headphones offer three Equalizer (EQ) modes:

Bass Mode
Pop Mode
Vocal Mode

To switch between EQ modes, click the Power On/Off & EQ button (5).

Headphones with 3 EQ Modes indicated: Pop, Vocal, Bass — Image: The headphones feature three distinct EQ modes for different audio preferences.

5.3 Calling (Mobile)

Answer Call: Click the MFB button (2) when a call is incoming.
End Call: Click the MFB button (2) when the call is over.
Cancel Call: Click the MFB button (2) when making a call.
Reject Call: Press and hold the MFB button (2) for approximately 2 seconds when a call is incoming.
Redial Last Number: Double-click the MFB button (2).

5.4 Siri or Google Assistant

In standby mode or music playback mode, long press the MFB button (2) for approximately 2 seconds to activate your device's Siri or Google Assistant.

6. AUX Mode

The headphones can also be used in wired mode with the included 3.5mm audio cable.

Connect one end of the 3.5mm audio cable to the 3.5mm jack (6) on the headset.
Connect the other end to your mobile phone or other audio device.

Note:

If the headphones are powered on, they will automatically power off once the 3.5mm audio cable is plugged into the audio jack.
To power on the headphones again, the 3.5mm audio cable must be removed from the headphone jack.

7. Charging Instructions

Before initial use, please ensure the battery is sufficiently charged.

When the headphone battery is low, use the provided Type-C charging cable to charge the device.
During charging, the charging indicator light will be red.
Once fully charged, the indicator light will turn solid blue.

Diagram showing headphones connected to a charger via Type-C cable — Image: Illustration of connecting the headphones to a power source for charging using the Type-C port.

8. Technical Specifications

Feature	Specification
Model Name	JH-919
Bluetooth Version	V5.1
Working Distance	≥10m
Frequency Response	2402-2480MHz
Input Voltage	DC 5V, 0.5A
Charging Time	Around 2 hours
Charging Port	Type-C
Speaker Driver Unit	Φ 40mm, 32Ω
Battery Capacity	400mAh
Music Play Time	28 hours
Talk Time	27 hours
Standby Time	266 hours
Material	Metal, Plastic, Leather, Silica Gel
Headphone Pads Material	Memory Foam
Active Noise-Cancellation	No
With Microphone	Yes
Control Button	Yes
Volume Control	Yes

9. Troubleshooting (FAQ)

Headphones cannot be turned on:
Please ensure the battery is sufficiently charged.
Pairing failure:
Ensure the headphones are powered on and in pairing status (blue and red lights blinking alternately). Make sure your mobile phone or other device is within 1 meter range. Try the pairing process again.
Automatic connection:
The headphones will automatically connect to the last paired mobile phone or device when powered on.
Sound cut off/stuck:
Check if your mobile phone or other connected device is within the valid working range (10 meters). Also, ensure there are no significant obstacles between the headphones and your device.
Charging method:
Ensure you are using a DC 5V/0.5A charging adapter, car charger, or power bank to charge the headphones.

10. User Tips

Enhanced Bass: The headphones feature a decent bass mode among its three EQ options. Experiment with the EQ button to find your preferred sound profile.
Gaming Performance: While generally good for the price, some users report a slight delay when gaming wirelessly. For optimal gaming audio, consider using the included 3.5mm audio cable.
Comfort for Glasses Wearers: The over-ear design with memory-protein ear cushions is designed for comfort during long periods of use, even for those who wear glasses.
Wired Mode Battery: When using the 3.5mm audio cable, the headphones power off and do not consume battery, allowing for continuous listening without power.
Compatibility: These headphones are compatible with a wide range of Bluetooth-enabled devices, including iPhones and Android smartphones.

11. Safety Notes

Listening Breaks: When wearing headphones to listen to music, it is recommended to rest your ears every hour.
Volume Control: Do not turn up the volume too much when listening to music. If someone one meter away can't hear you clearly, you should lower the volume.
Sleeping Use: Avoid wearing headphones while sleeping, as pressure on the earcups due to sleeping position can cause physical damage to the eardrum.
Discomfort: If you feel any discomfort in your ears or head, take off the headphones immediately.
Battery Care: Pay attention to regular charging and avoid letting the battery get too low, as this can reduce battery life and the service life of the headset.

12. Warranty and Support

For warranty information, technical support, or service inquiries, please refer to the documentation provided with your purchase or contact the manufacturer directly. Keep your proof of purchase for any warranty claims.

A PDF version of the user manual is available for download: User Manual (PDF)

Siindoo JH-919