Specification :

Operating range: ≤10 meters (the distance depends on the equipment used in the environment)
Headphone capacity: 50mAh
Charging box 500mAh
Bluetooth version: 5.0
Charging time: ≈1.5 hours
Standby time: ≤150 hours
Music duration: ≈5 hours
Function: Binaural call; automatic connection; memory pairing; automatic switch
Switch between upper and lower music; call voice assistant: call rejection
Charging current: DC5V
Product weight: 100g

Packing list : 

headset x1 data cable x1