Model#R908 Mono Bluetooth Headset Mode:A2DP/AVRCP/HFP Chipset: AB5616A3 V5.2 Frequency: 2.4GHz Transimit Power: Class 2 Music Time: 6.5H Talking Time: 4.5H Standby Time: 40H Charging Time:2H Model...
Advantages of bone conduction The transmission route of air conduction sound is "sound wave - auricle - external auditory canal - tympanic membrane - malleus - incus - stapes - vestibular window -...