Product features: 
Bluetooth version: Jieli scheme version 5.0 
transmission distance: outdoor straight line distance 10 meters 
binaural battery capacity: polymer lithium battery 40mah   

Charging box battery capacity: 350mah 

Listening to music time: 1.5 hours up/down song/pause play 
talk time: 2 hours 
standby time: 100 hours 
charging time: 1-2 hours 
working current: 22MA 
standby current: 4uA 

pairing mode: long press boot blue light flash is normal pairing mode After booting, do not release and continue to press for three seconds until the blue light flashes rapidly. At this time, the tone is paring, and then enter the binaural pairing state. After the binaural pairing is successful, the blue light flashes slowly. 
Prompt tone: Power on prompt: POWER ON 
shutdown prompt: power off 
pairing status prompt: paring 
connection prompt: you device is connect 
disconnection prompt: you device is disconnect 
low power prompt: battery low 
button function: long press boot, long press shutdown , click Music Pause / Play / Call Answer / Hang up the phone, double click on the next track. 
Charging instructions: 
Headphone charging indicator: The headphone charging red light is on, and the red light is off when the battery is full. 
Charging box charging indication: 
1. When the charging box is charging the earphone: the green LED light on the charging box flashes, and the green LED light goes out after the earphone is full. 
2. When charging the charging box: The green LED on the charging box flashes, and the green LED lights up when the charging box is full.