Our Boost Wireless Charger Speaker is made of ABS+CLOTH. The size is 4.25"L *2.2"W*2.12" H. Encourage clients to work with your company and connect with this boost wireless charger speaker! It has high-definition Bluetooth® 4.2 technology and is offered in black or wood tones. It features a 300 mAh lithium polymer battery (Output 5 Volts/900 mA), micro USB input (cord included), wrist strap, and a non-slip bottom. Users just pair their devices to enjoy dynamic stereo sound. It provides up to two hours of playtime and can also charge Qi-enabled devices when they are placed on top of the charging pad. Note: some computer and laptop USB ports may not supply enough power to charge a device using this charging pad.