ZONOKI BT1000 Wireless Earphone Professional Touch Control Headset Stereo Sound Audio Gaming Bluetooth 4.1 Headphones for Phones - Brown wireless stereo bluetooth headset touch control Bluetooth version:4.1 Supported Bluetooth profiles:Hands free profile V1.6,headset profile V1.2,AVRCP V1.4,A2DP V1.2 Paired devices:Connected to two at the same time Operation range:UP to 10m Microphone:41.5mm,Sensitivity103db3db Microphone frequency: 50HZ-15KHZ Speaker:40mm dynamic speaker Battery Charge:DC 5V Battery: Lithium Polymer Battery 300mAH Operate hours:About 17 hours(battery saturation) Standby time: 15 days Pairing passkey or pin:0000 Dimensions:L 180 W 154 H 72 mm Weight: 142g Full weight480g