Package Dimensions: 13.3 x 7.6 x 1.6 cm; 10 Grams [How to Use] The first time you plug in the headset, the 'Connect to iCloud' window will pop up, click connect to use it. When making or receiving calls, the audio needs to be switched from the speaker to 'Baets'. The second time, open the iPhone's Bluetooth when using it for the first time, find 'Baets' under other devices and click connect, the headset will automatically connect to your device next time you use it. [Wide Compatibility] The headphones are widely compatible with iPhone 11/13/13 Pro/13 Pro Max/12 Mini/12 Pro Max/12/SE/11 Pro Max/11 Pro/11/XS Max/XS/X/XR/8/8 Plus/14/14Pro/7 Plus/7. Supports all iOS systems. [Perfect Noise Cancelling Design] The ergonomic ultra-light in-ear design, with solid sound-insulating material, minimizes sound leakage while reducing external noise, giving you clear sound. [Remote Control and Microphone] The headphones feature a built-in control with a high-quality hands-free microphone. The music and volume control is designed to play/pause music, increase/decrease volume, next and previous track, answer/end calls, wake up Siri. You don't need to take your phone out of your bag or pocket when performing these operations, freeing your hands.