Intex Bt14

Wireless Sports headphones Neckband Earphone style with freelance Sound Cavity Magnetic Earhook integral High Definition electro-acoustic transducer, Voice Prompt for simple Operation Wireless Calls & Music Liberation Of Your Hands excellent And Secure match, exercise Partner Digital Controls : Power, Vol+, Vol-, Play/Pause, career style : Neckband headphone style with freelance Sound Cavity Charging voltage: USB 5V version v4.1 battery capcity :135mAh, range:10M, operating Voltage: 3.4V-4.2V, Frequency response: 2.402 G-2.480G frequency range;20Hz~20KHz ,Standby time:up to 200h ,charging time:up to a pair of h, speak time: up to seven.5h, music time:up to six h, temperature:-20~60 deegri c,packing size:16.4x2.9x20.3cm