Bluetooth chip: RELTEK BTL8763B V5.0Working frequency: 2.402-2.480GHz
Support agreement: HSP/HFP/A2DP/AVRCP
Transmission distance: 10 meters
Speaker diameter 6mm graphene
Listening to music for 5.5-6.5 hours
Talk time: 8 hours.
Standby time: about 100 hours.
Headset: 3.7V lithium battery 60mAh
Charging bin: 1200mAh
The color is red, blue, yellow, and all black.
Function: waterproof, touch control, double earplug, stereo, long working life.