High quality plastic, small and exquisite, easily be put into your bag. Coming with the USB cable which can compatible with any USB port, such as computer, power bank, regular socket and car charge. Even if the battery is out of power when you go out, connect a USB output device and then you can use it anytime, anywhere. Perfect for home, gym, trips, travel, Office and outdoor activity. 6.3" L x 3.35" W