Color: black mini wireless bluetooth 4. 1 + edr earphone with mic specification: bluetooth version: v4. 1+edr wireless frequency:2.402-2.480ghz transmission power:class2 talk time:about 4 hours music playing time:about 3 hours stand by time:about 120 hours effective range: 10 meters weight:about 42g features: hands-free headset light weight, portable, easy to carry ultra mini design , stealth, popular and beautiful enjoy music: bluetooth 4. 0 voice broadcast when you receive a one button to answer , built-in microphone play the music in your phone (after Bluetooth pairing) can be compatible with various bluetooth enabled devices such as :mobile phones, ipad, pc, . Package includes: 1 x mini bluetooth earphone 1 xUSB cable tips to use: 1. Before you start using the headset, please use theUSB charger cable to charge first. 2. Power on and enter pairing mode automatic: press the power button of the headset for 5 seconds until you see the blue-red light blinking alternately. 3. Make sure you turned on the bluetooth on your phone, search and connect headset model ("S530") on it. 4. Power off: press the power button for 3-5 seconds until you see the red light is on. 5. Changing chinese and english mode: press the power button for about 1 second, and then release. 6. Power indicator charging: when charging, the red light is on; after fully charged, it shows no light.