A20 Plus Wireless Earbuds
User Manual and Product Information
Product Introduction
This document provides detailed information about the A20 Plus wireless earbuds, including their features, operation, specifications, and safety guidelines. The product is made of 108g copperplate paper with single black double-sided printing and gloss oil finish, with finished dimensions of 75*90mm.
Packaging List
- Host *1
- Charging Cable *1
- User Manual *1
- Certificate of Conformity *1
Product Appearance and Features
The A20 Plus features a sleek design with a charging case and two earbuds (OWS and TWS versions mentioned, though the primary focus appears to be on TWS functionality based on operations). Key components include touch control areas, indicator lights, charging pins, speaker holes, and a Type-C charging port.
Charging Case Features
- Charging Indicator Light
- Power Indicator Light
- Charging Pins
- Indicator Light
- Speaker Hole
- Type-C Charging Port
Earbud Features
- Touch Area
- Indicator Light
- Microphone Hole
- Speaker Hole
- Charging Port
Product Function Operation
Detailed instructions on how to operate the A20 Plus earbuds:
Connecting to a Phone
Search for the Bluetooth name 'A20-TWS' in your phone's Bluetooth settings and connect.
Common Operations
| Function | Operation |
|---|---|
| Voice Assistant | Long press L/R touch area for 2 seconds |
| Play/Pause | Double tap L/R |
| Answer Call | Double tap L/R (during incoming call) |
| Reject Call | Long press L/R for 2 seconds (during incoming call) |
| Hang Up Call | Double tap L/R (during call) |
| Previous Track | Triple tap L |
| Next Track | Triple tap R |
| Volume Down | Single tap L |
| Volume Up | Single tap R (adjusts phone volume by one increment) |
Note: Some Android phones may have compatibility issues with volume synchronization. Ensure the Bluetooth device volume is synchronized in the phone's settings.
Power and Connection Status
- Phone Battery Display: The earbuds' battery level may be displayed on the phone (requires phone compatibility).
- Auto Reconnect: Earbuds automatically reconnect when removed from the charging case. They disconnect when placed back into the case.
- Low Battery Alert: A low battery prompt will sound when the earbuds reach 3.3V.
- Charging Status: The charging case's indicator light shows charging status. Earbud indicator lights are on during charging and turn off when fully charged.
Product Specifications
1. Charging Case Specifications
- Input Voltage: DC 5V
- Charging Interface: Type-C
- Charging Current: 250 mA
- Battery Capacity: 300mAh
2. Earbud Specifications
- Bluetooth Name: A20-TWS
- Battery Capacity: 3.7V / 25mAh
- Playback Time: Approx. 2-3 hours
- Charging Time: Approx. 2 hours
- Channel System: Dual Channel
- Bluetooth Distance: ≥10m
- Frequency Response: 20Hz ~ 20KHz
- Supported Bluetooth Protocols: A2DP1.3/AVCTP1.4/AVDTP1.3/AVRCP1.5/HFP1.5/SPP1.0/SMP/L2CAP4.2
- Bluetooth Version: Bluetooth V5.3
General Specifications
- Standby Time: Approx. 120 days
- Charging Time (Earbuds): Approx. 2 hours
Precautions
Please read the following precautions carefully:
- Do not use corrosive cleaners to clean the product.
- Do not heat the product or place it near heat sources, such as cooking stoves.
- Do not expose the product to direct sunlight for extended periods.
- Do not dispose of the product in fire, as it may cause an explosion.
- Do not attempt to disassemble or modify the product, as it contains no user-serviceable parts.
- Do not use the product in the rain.
- If the product will not be used for a long time, store it in a dry environment and charge the earbuds at least once a month to prolong their lifespan, avoiding extreme temperatures and dust.
Important Note: The product contains a built-in rechargeable battery. Do not attempt to disassemble or replace it yourself. Use the correct charging method. Do not place the device near fire sources or expose it to sunlight, as overheating may damage safety devices, leading to battery explosion or fire.
FCC Compliance Information
FCC Caution:
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. Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
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.
The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.
Certificate of Conformity
PASS
QC 01
Inspector: [Inspector Name/ID]
This product has passed inspection.
Product Warranty Card
- Product Model: A20 Plus
- Purchase Date:
- Distributor:
- Invoice Date:
- Phone:
- Customer Name:
- Postal Code: