Connect methods: Wireless Bluetooth<br> Software: For ZELLO<br> Connection distance: 30M<br> Supported operating systems: For Android 4.0 above, for IOS 8.0 above<br> Battery: CR2032(need install)<br> Working hours: at least 200 days<br> Wide Application: Suitable for car, motorcycle, bicycle riding, for easy intercom at any time<br> How to use it: Step 1. Install the battery: Turn this button to remove the chip inside, install the extra battery and turn the switch to it to "ON".<br> . Open the Wireless and Bluetooth on the mobile phone.<br> Step 3. Open the for Zello app,click",click"Push-to -Talk",click the button wait for a while,after connect it will show "PTT-Z01",click "PTT-Z01",choose "Handto Talk.<br> Step4. Click the button to make a communication.<br> Matters Needing Attention: 1. The product is only targeted at Zello's software devices.<br> 2. The product needs to be used with Bluetooth and network enabled.<br> 3. Cannot be used while exiting Zello software.<br> 4. After connecting, there is no need to reconnect, you can directly operate by opening the APP always online.<br> 5. If the program is not used for a long time, you can also send it by lightly touching the PPT button.<br> 6. For phones need to choose whether to press buttons or trlgger.<br> Colour:black<br> Material:plastic<br> Package Contents:<br> 1 x Walkie Talkie Control Button<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.