This is a 2 in 1 product: Power bank and wireless camera remote shutter. It is portable and stylish! This device uses a high quality lithium battery, and it provides emergency charging for most cell phones and digital devices (Apple iPhone/ iPad series, Samsung Galaxy, HTC, MP3, MP4, etc.) This device doesn't need to connect via Bluetooth, simply scan the QR code to download iOS or Android camera software, open the camera software and press the power bank camera button to take pictures wirelessly. It can support multi-device to take pictures at the same time.