The iHip Batman Bluetooth Portable Wireless Rechargeable Speaker Keychain is a sleek and powerful audio device that can be easily connected to any Bluetooth-enabled device. With a compact cube shape and a black color, this speaker is perfect for on-the-go listening. It features a subwoofer for enhanced bass and has a smart home compatibility with Google Assistant. The material is durable plastic and the audio input is USB. The RMS power is 5W, providing high-quality sound in a portable package. Perfect for fans of DC Comics and Batman, this speaker is a must-have for any audio enthusiast.