RLX Bluetooth stereo headset

Brand new Color Red Cords and bag included Bluetooth specification: V4.1 Sleek, sharp and simple: Easy to use and aesthetically pleasing The Bluetooth technology enables you to go to the gym, run, cycle and 10m away from your Bluetooth device Leave your phone in the locker room and still have control of your song choice with just a click of a button Built in microphone: You can answer or reject calls with just one tap on the side of the headset. Hands-free and clear quality sound Adjustable headband: Allows you to create the perfect fit and maximum comfort Support 3.5mm audio input, convenient for use Built-in 500mAh Lithium-ion battery: You can be on the move all day with these headphones with the long battery life of 8-10 hours per charge Charging time is just for 2 hours, wait for the blue flashing light on the control panel Model: RLXTEC Wearing type : Headband Function: Answering Phone,Bluetooth,Microphone,MP3 player,Song Switching,Voice control Connectivity : Wireless Connecting interface : 3.5mm,Micro USB Application: Computer,Mobile phone,Portable Media Player,Sport Sound channel: Two-channel (stereo) Frequency response: 2.402GHZ-2.480GHZ SNR: No less than 80db Working Time: 8-10 hours Bluetooth distance: W/O obstacles 10m Bluetooth protocol: A2DP v1.2,AVRCP,HFP,HSP Battery Types: Lithium-ion battery Battery Voltage: DC 5V