1. Bluetooth: 5.1
2. Signal transmission channel: CASSL2
3. RF transmission power: 90DB
4. Microphone sensitivity: 42DB
5. Transmission range: about 10-15m
6. Transmission rate: 24MBPS
7. Battery capacity: 40mAh for earphones, 400mAh for charging bin
8. Use time: about 4-5h
9. Charging interface: Type-C/USB-C
10. Input voltage: DC 5V 1A

Features:
1. Mini body shape, no feeling of wearing, comfortable and invisible
2. In-ear noise isolation design, tight fit
3. Simple and compact, easy to carry
4. The charging box has a power display, which is convenient for understanding the power situation
5. Single/binaural switchable, low latency voice calls, binaural surround sound

Packing list:
– Charging case x 1
– Bluetooth headset x 2
– Power cord x 1
– U-shaped ear cap x 2
– Round ear caps x 2