Cool Elephant Stainless Steel Water Bottle By 32 oz Water Bottle - Insulated Thermo - Double Walled Wide Mouth Tumbler &ndash; Leak & Sweat Proof Flask - Non-Toxic BPA Free -Cold/Hot Drinks For 12 Hours How to use: As this lighting earphone is a Bluetooth connectivity version. You need to open the Bluetooth and connect your lightning earphone first, then it will connect automatically next time in few seconds when Bluetooth is on. Multi-functional: Built in remote control button and MIC allowing calling function, music and volume control. Lightning connector is for charging automatically when you connect it. High-end technology and ergonomic design: Built with high-performance speakers for extended frequency range, lower distortion. Ergonomic design makes it more comfortable, relevant and cool to put on your ear. Wide compatibility: Perfect fit for iPhone XS Max XS XR X 8Plus 8 7Plus 7, support all iOS systems.