Read more Hntmao T19——A Good Choice For Daily Use and Gift. Providing you with a pair of True Wireless Earphones with up to 30 hours of battery life. You can easily switch between single and binaural models and enjoy one-click manipulation including volume control. Lightweight and Mini, which let you use it anytime anywhere, simply enjoy your life. ONE-BUTTON OPERATION Handy and comfortable! Avoiding the wrong operation when wearing or touching the earbuds. Combining call, music, volume, voice assistant, etc., in only one button. Simple and convenient operating, helping it easy to put down your device. Volume-: Click L Button 3 Times Volume+: Click R Button 3 Times Previous: Hold L Button for 2s Next: Hold R Button for 2s Play/Pause: One-click Either Button Activate Siri: Double-click Either Button Read more Read more One-Step Pairing And Free Switching Hntmao T19 will automatically pair and automatically connect to the last connected device after opening the charging case. You can easily switch between single-mode and binaural mode without manually setting, waiting, and disconnecting. In just a few seconds, you will be immersed in the wonderful world of music or share the same music with your friends and family. PLEASE NOTE: Please remove the plastic film cover on the charging points of the earbuds and get them fully recharged before first use. The earbuds will not be disconnected and power off automatically when being put into the charging case if the case has no power. Please try to reset your earbuds if the two earbuds cannot be paired with each other or your devices. Ergonomic Compact Design The ergonomic structural design gives you a comfortable wearing experience. The charging case is so small and light that allowing you to charge your earbuds anywhere. HD Stereo Sound High-definition rendering technology provides lossless sound quality. you can enjoy music anytime, anywhere. Satisfy Various Situations No master earbuds. You can easily use one earphone or two earphones, and you can also share with friends at any time. Read more Due to software compatibility issues, on some Android phones, the volume control of the earbuds cannot be synchronized with the device, resulting in a low maximum volume. At this time, please increase the volume of the phone, the volume can be increased very loudly.