ESYNIC Wireless Bluetooth Speaker V4.0 Portable Sport Wireless Speaker Waterproof Dual 3W Driver Enhanced Bass with Mic Handsfree for iPhone Golf Pool Party Beach Camping Running 360-degree Speaker with Dual Driver3W X 2 Total System Power, Offers Super Bass Output. Make You Enjoy Music without Losing. HiFi and Clear Loud Sound Output. Built in Mic & NFCBuilt in Microphone Allows you to Answer Calls while Listening to Music; NFC Technology (Near Field Communication) for Easy and Instant Pairing. Durable DesignIPX4 Waterproof, Dustproof, Anti-scratch, Shockproof, High temperature Resistant Speaker, Excellent for Outdoor Sport Exercise Travel. 12H Playing Time & Power Bank FunctionBuilt in 3.7V 3600mAh Rechargeable Lithium-ion Polymer Battery, Enables you Stream Music for up to 12 Hours on a Full Charge and also 3600mAh Large Capacity can be Used as a Power Bank. CompatibilityCompatible with All Your Bluetooth-enabled Devices, Like iPhone, iPad, Samsung, Android Phones and Also Built in 3.5mm jack, You can Play the Music via 3.5mm Audio Cable (Included).