specification:
Model: B121
Material: ABS
Horn: φ13
Plan: Jerry 5.0, 6936D
Distance: 10 Meters
Headphone battery capacity: 30mAh (without protection board)
Charging compartment battery capacity: 1200mAh (18650 battery)
Functions: pause/play, up and down song (touch twice), volume increase and decrease (touch three times)
Playing time: 3hours
Charging time: 4 hours
Standby time: 90 days
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