Wireless Portable 4.1 Bluetooth Speaker : Whether you're Partying, Walking out, Camping, Hiking, Biking, or just lounging around the house, enjoy a full-range stereo sound with a impressive volume Compact and powerful : high quality wireless portable mobile bluetooth speaker delivers powerful sound and robust bass Built-in rechargeable : 3.7V, 1200mAh lithium-ion polymer battery: Provides extended playback, enables you to stream music for up to 6 hours on a full charge speaker bluetooth High Frequency Sound Works on all devices with Bluetooth support Speaker for mobile, Wireless speakers, Wireless Speakers for Computer