1.Automatic matching：Open the charging base, the earphone starts automatically, enter the matching state, and the left and right ear are automatically paired. Turn off the charging base, the headset automatically shut off and enter the charging state. 2.Long battery life with dual-function portable charge ：With unique conductive portable charging system, you never have to worry about running out of battery on your wireless headphone. Up to 2.5-3 hours for playing time by itself. The Charging base can recharge the Bluetooth headset up to 2-3 times, total provides up to 6 hours of Music Play Time. 3.Application:Truly wireless earbuds design adopted with true wireless technology u0026nbsp;for walking, Jogging, Hiking, Biking, Gym and Watching TV, or Sleep. The right and left headphone sync with each other trough wireless and provide stereo output sound. When you have hands-free calls only the main headphone can transfer voice signal;u0026nbsp; 4.Ergonomic design: optimized for extra comfort and fit better in ear, with S/M/L three size ear tips, suit for most peoples ear. Ease the problem of popping out,soft material to protect ears, make your phone call and music time more comfortable.u0026nbsp; 5.Desigen for sport：The nano coating technology ensures that it’s sweatproof, u0026nbsp;Making this wireless Bluetooth headphones perfect for the gym, running, biking, hiking, exercising, and any other activity. Compatible with iPhone 7/7 Plus/6s/6s Plus/6/6 Plus/SE/5s/5/4s/iPod/iPad/iPad Mini/iPad Pro/Macbook/Macbook Air/Macbook Pro/iMac/Mac Pro/Mac Mini/Samsung Galaxy S6/S5/S4/S6 Edge/Edge+/7/6/5/4/3/Edge/Android/Windows/tablets/laptops/computers.

1.Power On: (1)hold MFB button for 3 seconds or (2) from the charging base machine boot.until the earbud Led light flash blue light 3 times, at the same time there will be Voice Prompt "Power On" . 2.Power Off: Press MFB keys about 5 seconds until the earbud Led light flash red light 4 times , at the same time there will be Voice Prompt "Power Off" . 3.Power Off : Put them back and close the charging base to turn off automatically until the earbud Led light flash red light 3 times , u0026nbsp;"Power Off"u0026nbsp;

How to Pairu0026nbsp; Bluetooth Headset Pick up the two headsets from the charging base to from the charging base to 10 seconds, the two headsets will enter auto-pairing mode.u0026nbsp;The headset (R) red and blue lights flash alternately. paired successfully Or press MFB key for 3 seconds to power on and waiting for 10 seconds, u0026nbsp;the two headsets will enter auto-pairing mode.The headset (R) red and blue lights flash alternately. paired successfully Enable your phone's bluetooth and Search SAVFY-BTD0177-R to pair u0026nbsp;

V4.1 Bluetooth Profiles Supported: HSP, HFP, A2DP, AVRCPAud io Decoding Protocol：SBC Transmission Power：Class 2 Operation Range：Up to 10 meters Frequency Range：2.4GHz-2.48GHz Battery of Headset：45mAH Li-polymer Battery X2 Charging Voltage of Headset：5V Charging Time of Headset： About 1hour Battery of Base：300mAH Li-polymer Battery Charging Voltage of Base：5V Charging Time of Base：About 2 hours Charging Headset Times from Charging Base ：2-3times Charging Base Supply Power for Headset Music Play Time：About 6 hours Music Playing Time：Up to 2.5 hours Talk Time：Up to 2.5 hours Standby Time：Up to 80 hours Dimensions of Charging Base(mm)： L69×W30×H29.5 Dimensions of Headset(mm) ：L23.5×W17.1×H22.4 Weight(one headset) About 4.6g Total Weight About 38g