Fangrui Product Details Built In Microphone Wireless Sport Headset Lightweight Earphone 5.0 Earbuds Super Long Standby Time Stereo Description: Colour: Black Material: Abs Performance: Tws Headset Applicable Models: Suitable For All Mobile Phones And Smart Devices With Function Version: 5.0 Protocol Mode: A2dp, Avrcp, Hsp, Hfp Solution: Jerry Effective Distance: 10m (accessible) Microphone: With Binaural Pairing Method: Automatic Pairing After Booting Decoding: Support A2dp Decoding Sensitivity: 42db Distortion: Speaker Specifications: 6mm Pairing Name: A7s/e7s Battery Capacity: Earphone 45mah, Charging Compartment: 300mah Headphone Music Time: 4 Hours (depending On Volume) Headphone Talk Time: 3 Hours (depending On The Volume) Headphone Charging Time: 1 Hour Battery Compartment Charging Interface: Micro Usb Specifications: Wireless Headphones, Deliver A High Quality Audio Listening Experience With Clarity, And A Smooth Bass Response For Enjoyment Of All Styles Of Music. Lightweight And Great For Sports, Walking, Running Or A Favorite Activity. 5.0, Energy Saving, Improved Data Transfer, And Less Interference. Long Lasting Rechargeable Battery , Up To 4 Hours Of Play Back Time And Super Long Standby Time. Built In Microphone Allows These Headphones To Act As A Headset For Hands Free Calling With Mobile Devices Package Included: 1 X Headset 1 X Usb Charging Cable