Product DescriptionEarphones uses high-performance hardware and fine tuned algorithm, producing incredible sound quality with deep bass and crisp treble, letting you immerse yourself wirelessly in the music world for sports, leisure, commute and work.CVC 8.0 noise cancellation technology brings advanced audio enhancements and noise suppression, achieving the best possible calls even in noisy environments.Effortlessly manage audio playback calls with the multi-function touch panel and microphone on each earbud.Start the Siri Google voice assistant with one button, Voice interaction makes hands free.FeaturesWaterproof IPX8 Nano-coating efficiently protects the earbuds and charging case from sweat or water.Perfect for running, skiing, hiking, travelling etc.Only 0.18OZ, wireless earbuds are ergonomically designed.S/M/L 3 sizes ear tips are made of ultra-soft silicone to ensure a comfortable fit to your ears.Compatible with any Bluetooth enable devices such as iPhone, iPad , Samsung, HTC, Huawei, and any other Android, IOS and Windows Phone, tablet or PC.5.0 earbuds instantly to your device when you open the charging case.Only 1 earbud is working your earbuds may be in mono mode.Please try to pair the 2 earbuds as the way as below:Disconnect the Bluetooth pairing and delete the Bluetooth connection record on the phone.Switch off the Bluetooth function of your phone.Long press the left and right earbuds about 15 seconds until you hear the voice from the earbuds power off.Then put the earbuds back to the charging box.After 5 seconds, take the earbuds out from the charging case, the 2 earbuds will pair automatically within 5-8 seconds, then you can open the bluetooth of your phone and reconnect the earbuds.Finally the 2 earbuds will work at the same time.How to connect this wireless earbuds with bluetooth devicePick up 2 headsets from charging Box, They will automatically connect each other,then Pls enter your devices bluetooth settingchoose Touch Two C5S to pair Bluetooth device with the earbuds.C5S earbuds will reconnect to your device automatically after the first time pairing and use.Technical Specifications:Audio Codec: SBC, AACBluetooth Version: 5. 0Bluetooth Range: Up to 20 m/66 ftPlaytime: 5 hrs, up to 140 hrs with charging caseBattery Capacity: 3500 mAhPackage Content:- Wireless Earbuds- Charging Case- Micro USB Cable- 3 Sets of Silicone eartips(S/M/L)- User ManualWarming Tips:Please use 5V/1A,1.5A or 2A charge,not use fast charger.Only charge when the charge case closed,will stop charging when you open the charging case.