Touch Two Sports Headphones Wireless Bluetooth Headset IPX5 Waterproof Earphone With Mic BDZ

Battery : Polymer lithium battery 45mAh Bluetooth version : 4.1 Operating voltage : 3.2V-4.2V Sound unit : 8MM moving speakers

Impedance : 32Ω Speaker sensitivity : 105dB Speaker Bandwidth : 20-20KHz Microphone sensitivity : -42+-2db Bluetooth frequency : 2.4-2.48GHz Bluetooth working range : 10 meters Bluetooth protocol : A2DP/HFP/HSP/AVRCP
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