Press once (left/right) to pause or play Press twice (left/right) to call Siri Press three times (right) to the previous song Press three times (left) to skip the next song Open charging case lid auto Popup window
Product configuration: 1 * A pair of headphones 1 * Charge USB charging cable 1 * User manual Function 1) Can support both IOS and Android devices, as well as any device that has Bluetooth connect (laptop, etc.)
Very short latency. Almost no delay for sound transmission from the device.
Quick connect. pro4 connects in less than 2 seconds upon turning on the Bluetooth connection.
Good battery life. Can use up to 4 hours continuously. The charging case can charge the earphones around 3-4 times. A full charge for charging case can last for whole day usage.