The Wi-Fi BacPac is compatible with the Original HD HERO and HD HERO2 cameras.The Wi-Fi BacPac attaches to your GoPro camera enabling long range (600"/180m in optimal conditions) remote control when used with the Wi-Fi Remote. A single Wi-Fi Remote can control up to 50 Wi-Fi BacPac enabled GoPro cameras at a time. The Wi-Fi Remote is an optional accessory, not included. To learn more about the Wi-Fi Remote, see the Wi-Fi Combo Kit. GoPro Wi-Fi BacPac Features: Wi-Fi BacPac (with built-in Li-ion Battery) Waterproof Backdoor Non-waterproof Backdoor 12″ USB Charging Cable Wearable and waterproof to 10"/3m Style number AWIFI