True Wireless Earbuds System The Wireless Earbuds E7S with Charging Box offers an engaging cordless experience with wireless charging, music listening, and calls. Each in-ear bud fits comfortably and securely in your ears. No more worries about long cables tangling, cord bouncing or tapping. Convenient Recharging Charge your Bluetooth earbuds anywhere, anytime with the specially designed mini charging case. The built-in 300mAh battery can charge your wireless earphones 3 times without connecting to a USB power source. Multi-use Connectivity Twin Mode allows you to use 2 earbuds simultaneously. Now you can share the same music/audio with someone. Single mode lets you select the right or left earbud. In single mode, each Bluetooth earbud can connect with two Bluetooth devices such as your iPhone or Android phone, iPad, tablet, or laptop 3 Times More Power The wireless earbuds charging case has enough power to charge your earphones up to 3 times - so that you can enjoy more music and talk time while you travel. IP4 Water-resistant Protects your wireless earphones from rain and sweat especially when you're participating in your favourite sport or whilst travelling. Key Features: True wireless Binaural Calls High-fidelity stereo sound Magnetic earbuds charging Convenient and fast Multi-function button Easy to use One-touch callback function Storage charging case Lasting battery life Electric quantity digital display Technical Specification Bluetooth Ver.： V5.0 + EDR Compatible System: IOS/ANDROID/WINDOWS Wireless Range：≥10m Charging Voltage：5V Charging Current：50mA Standby Time：80H Talk Time：≥2.5H BT Music Play Time： ≥3 -4H Earbuds Charging Time： 1H Earphone Battery Capacity： 40mAhPolymer Lithium Battery Charging Case battery capacity： 300mah Polymer Lithium Battery Charging box chargeable times: About 3 times Dual microphone： Yes Speaker：8mm; 16Ω（Copper ring） Special Features: 5.0 wireless Bluetooth; Smart Touch Button Material: ABS Colour: Black Earbuds Size ：27*15*22mm Portable Case Size ：62*39*28mm