User's Manual

damage to the device.
 The shell of charging box of this device is metal, and the edges are very thin, do not use
force too much, do not put your fingers or other body part into the hollow position of the
charging box, need to avoid any personal injury
Bluetooth Version
5.0
Working frequence
2.4-2.48GHz
Bluetooth distance About 10 Meters
Speaker frequence
20—20KHz
Single battery time
＞4 小时
＞4 Hours
Total battery time About 20 Hours
Charging battery capacity 300mAh
Earhones charging time About 1 Hour
Charging box charge time About 1.5 Hours
FCC ID: 2AVYG-CARD20
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.