2 Clear Sound Portable Speaker Wirelessly Stream Music from Any Bluetooth-enabled Device True Wireless Stereo (TWS): Allows You to Connect 2 Speakers Via Bluetooth with TWS Technology So they Can Play at the Same Time and You Can Double Your Audio Output IPX6 Water Resistant Secure and Simple Pairing for User-friendly Operation Micro SD Card Compatible 3.5mm Auxiliary Input Built-in Lithium Rechargeable Battery: 3.7V/1800mAh Power Supply: 5V Output Power: 5W Built-In Wrist Band Allows You to Carry the Unit with Ease Accessories: USB cable, Wrist strap, User manual Unit Dimensions (in): 5.51 X 3.54 X 3.20 [ L x W x H ] Unit Weight (lbs): 0.772