TWS Mini True Wireless Bluetooth Earbuds Twins In-Ear Stereo Headset EarphoneCategory: Dt 109 HeadsetSpecifications:- Compatible Brand: For Apple, Samsung, LG, HTC, Google, Sony, LG, HTC, Nokia, Motorola, Microsoft,Huawei, Xiaomi, Blackberry, Oneplus, Lenovo, Asus, Acer, OPPO, Meizu.- Compatible Device: Bluetooth-enabled mobile phones, tablets, computer, watch, MP4, speaker.- Bluetooth Standard: V4.2- Bluetooth Profiles: HFP, HSP, AVRCP, and A2DP- Audio enhancements: CVC6.0 noise reduction- Standby Time: Up to 150 Hours- Music/Talk Time:2.5-3 Hours(Earbuds)- Music/Talk Time: Up to 12 hours (with a 450mAh protable battery case)- Battery type: Rechargeble lithium-ion polymer battery- Battery capacity: 50 mAh (with a 450mAh protable battery case)Package:1×Bluetooth Headphone1×Mirco USB Cable 1×User's manual2×EarbudsHow to use it?Binaural Mode: （Both earbuds work together）Note：This mode would need you to turn off the Bluetooth on phone firstly 1. Pressing the two earbuds' main button for seconds at the same time till the Red&Blue light flash alternately;2. Double-Click one the of earbuds (the other one keep still) to get paired with the other one, that would cost 3 seconds; 3. Turn on the Bluetooth on phone, find out "GW10" and connect it, then you would hear the sound for both. If you want to use one, please refer below. That would be more easier.Single Mode: 1. Pressing the earbud's main button for seconds untill the Red&Blue light flash alternately; 2. Find out "GW10" on Bluetooth and connect it, then you would hear the sound in one earbud.Note:The wireless buletooth stereo earbuds utilize the latest TWS (True Wireless) Bluetooth technology,the audio frequency range is similar with WIFI signal.It is a normal phenomenon that in individual cases, slave earbud(right chennal) might be interference by wireless signals but it connected automatically after without sound for 1-2 seconds while master earbud(left chennal)runs fine.Please try reconnect the earbud if it has a sound or connection problem.- The distance between the headset and mobile phone can not be greater than 10M- The distance between the two earphones can not be greater than 50cm.- If in Calling, just the Main earphone has the voice.