Inhouse product
Bluetooth version: V4.1
Audio Protocol : A2DP1. AVRCP1 2. HFP1 4. 6 Communication distance: 10 m; Bell diameter : 40mm*2 Impedance: 32Ω±15%; Frequency response range : 20~20KHz
Sound / noise ratio : >80dB
Distortion : <1%;
Working time : 14h; Charging time: 3h
CTN G.W.: 13.5KG; CTN SIZE: 47.5*45.5*42cm