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Features: Brand Name: JOWAY Sweatproof design High quality materials, lightweight body allows you to wear more comfortable Compatible for various brands of Bluetooth phones and Bluetooth notebooks, tablet PCs, MID, etc. Connectivity Wireless Connecting interface Micro USB Power supply Built-in rechargeable battery Function: Bluetooth, Microphone, Answering phone,Listening music Specifications: Bluetooth version: V4.0 Transmission Range: 10 m Profile support:HSP/HFP/A2DP/AVRCP Stand-by time:200h Talk time:6h Play music time:5h Charging time:About 1h Frequency range:2.402G-2.480G Ambient temperature:-20/+60 C Driver:11.5mm Impedance: 16Ω±15% Frequency response: 20-22000HZ Sensitivity: 110dB±3 dB Battery Capapcity: 90maAh Package Includes