Universal Hv-800 Wireless Music A2dp Stereo Bluetooth Headset Universal Vibration Neckband Style Headset Earphone Headphone for Cellphones Such As Iphone, Nokia, Htc, Samsung, Lg, Moto, Pc, Ipad, PSP and so on & Enabled Bluetooth (Black (Black) Universal Hv-800 Wireless Music A2dp Stereo Bluetooth Headset Universal Vibration Neckband Style Headset Earphone Headphone for Cellphones Such As Iphone, Nokia, Htc, Samsung, Lg, Moto, Pc, Ipad, PSP and so on & Enabled Bluetooth Working current: 25-35mA Bluetooth A2DP Working range: 10m Output power: 2x20mW Frequency range: 2.401-2.480GHz SNR: S/N?95 Charging Time: 2h-3h Talk time: 8-15 hours, play time: 6-10 hours Music Playing Time: up to 10 hours Frequency Response: 20 ~ 20000Hz CSR BC05 stereo Bluetooth chip, which guarantees high fidelity,stable performance and excellent communication effect.