Connect methods: Wireless Bluetooth<br> Software: For ZELLO<br> Connection distance: 30M<br> Supported operating systems: For Android 4.0 and above, for iOS 8.0 and above<br> Battery: CR2032 (requires installation)<br> Working hours: at least 200 days<br> Wide Application: Suitable for car, motorcycle, and bicycle riding, enabling easy intercom communication at any time<br> How to use it: Step 1. Install the battery: Turn the button to remove the chip inside, install the extra battery, and turn the switch to "ON".<br> Step 2. Enable Wireless and Bluetooth on the mobile phone.<br> Step 3. Open the Zello app, click "Push-to-Talk", press the button and wait for a while. When connected, it will show "PTT-Z01". Select "PTT-Z01" and choose "Hand to Talk".<br> Step 4. Press the button to initiate communication.<br> Matters Needing Attention: 1. The product is designed exclusively for use with Zello software.<br> 2. The product requires Bluetooth and network connectivity to function.<br> 3. Cannot be used when Zello software is closed.<br> 4. After initial connection, reconnection is not required; simply open the app to resume operation.<br> 5. If the app has been inactive for a long time, communication can be resumed by lightly pressing the PTT button.<br> 6. For phones, select the appropriate button or trigger setting.<br> Color: Black<br> Material: Plastic<br> Package Contents:<br> 1 x Walkie Talkie Control Button<br> Only the above package content is included; other items are not included.<br> Note: Light reflection and differences in display screens may cause slight variations in the color of the item shown in the picture compared to the actual product. Measurement error allowance is +/- 1-3 cm.