Product Features: 1. No More Tangled Wires ! Perfect sound quality and bass effect、 when you indoor or go out to enjoy unfettered music anywhere ! 2. Stable triangle shape structure、 exquisite and attactive metal grid 3. A2DP stereo Bluetooth transmission 4. 4W strong output power with outstanding sound quality 5. Water resistent、 Dustproof、 Anti-scratch、 Shockproof、Rechargeable、 suitable for both indoor and outdoor exercise 6. Aux in function support all digital audio device with 3.5mm jack、 such as Cell phone、 MP3、 MP4、Computer、 Notebook、 PSP... 7. playtime lasts for 5 hours at least 8. Passed the simulation environment test、 you can use it in the rain without any problem Note: The speaker haven't hands free. This product was design for waterproof and you can use it in the rain without any problem but please don't put it into the water.Specifications: Loudspeaker Output: 2W x 2Speaker unit: 1.5" x 2Impedance: 4¦¸Frequency response: 80Hz-20KHzPower supply: built-in Li-on rechargeable batteryUnit size: 150*56*56mmIncluded Package weight: 540gPackage including:Bluetooth Speaker x 1USB charge cable x 1Audio Cable x 1Layard x 1