Functions:1.Support remote control of play/pause,Website:http://www.s-ksenic.com, next song/last song,volume up/volume down,pick up/hang up/ reject the phone calls,last number redial.2.Pause the music & play back automatically when receives an incoming call.3.Connect two cellphones at the same time.5.When a call comes in, say “yes”to answer the call or say “no” to reject the call.6.Doze alarm function, when the driver doze, the earphone will emit rapid alarm to remind the driver.Details1. Bluetooth protocol: HSP, HFP, A2DP2. Bluetooth version: 4.03. Talking time: 4h;4. Playing time: 3h;5. Standby time : 60h;6. Charging time: 2h;7. Transmission distance: 10m;8. Weight: 8g;9. Impedance: 16ohm;10. Frequency response: 20-20kHz;11. Charging input: 5V/300-500mAProduct DescriptionSmallest Bluetooth EarbudsThe Smallest Bluetooth earbuds in the world, designed with exquisite appearance and invisible size for discreet listening to music without missing important things during work.Humanized design Lower the volume of voice prompt, to avoid annoying sound blaster when powering on/off; Clear Sound, Support Stream Audio, Video, Music A2DP, enable you to enjoy clear and natural sound when calling; Elaborate Manual for getting easy started .Up to 4 hours of continuous talk time, up to 3 hours of music time, display headset's battery level on iOS; Auto-turn off without connection for 10 min with Deep Sleep power-saving mode.Hassle-free after-sale Service Notice : The bluetooth is only for one ear . Not a pair. Due to the difference of people's ear, this earphone maybe not fits everyone. If the one you get is not perfect for you, please let us know. We will find a best way to help you.Would you like to relax in bed and enjoy your favorite music, movies without disturbing others beside you? Would you like to work when listen to stream audio, video, music on Pandora, YouTube, Siri, voice memo, audiobooks, Netflix? Would you like to do chores around the house with powerful audio? Specification: Bluetooth version: V4.0+EDR Bluetooth mode: Bluetooth/headset/A2DP Radio frequency:2.0402-2.480GHz Transmission level: Class 2 Supported A2DP:Music play(audio output:35Mw, Play/Pause) Work range:10 meters Charging time: 1 hours Charging cable: USB Micro Cable Talk time: 4 hours Music time: 3 hours Standby time: 120 hours Work current: 15mAh