SimplyVibe V5-BT1- Wireless Bluetooth Speakers with Built-In 18-Hour Rechargeable Battery, USB Charger and Speakerphone, Black Can pair with any Bluetooth enabled device without a code. 33 feet range. Excellent Battery Life - up to 18 hours on medium volume. 1500 mAh of capacity. Power bank feature to charge out to USB devices (e.g.., iPhone, iPad, Samsung Galaxy, Android Devices) LED indicators to display battery life. 2 Drivers, Stereo; 1.5W x 2; passive woofer