Feature:1. 6W HIGH EFFICIENCY SPEAKERS: Bluetooth speakers with 6W efficient speakers with large diaphragms and dual speakers deliver powerful music no matter where you play. Bluetooth chip provides 33ft of signal range.2. 3.5MM SOUND INPUT OUTPUT: 3.5mm/0.1in sound input makes it easier to use on devices without Bluetooth capability, and the 3.5mm sound output allows you to connect the same or other speakers in series to create surround sound.3. TOUCH SCREEN BUTTON: Diamond speaker with touch screen buttons, easy to use, built in microphone, hands free calling, a variety of playback modes to choose from, such as bluetooth mode, small memory card mode, sound input, etc.4. EASY TO USE: Wireless bluetooth speaker supports all bluetooth enabled devices, such as smartphones, tablets, etc. The speaker remembers used devices, so it's easier to reconnect and pass control.5. LONG BATTERY LIFE: Portable bluetooth speaker can play music continuously for 8 hours with only one full charge. The portable speaker takes 2.5 hours to fully charge, so you can use it while you charge.Specification:Item Type: Bluetooth SpeakersModel: D8Material: ABS, Metal IronColor: BlackBattery Type: Built In 1500mAh Rechargeable Polymer Battery (Included)Bluetooth Version: BT4.1Bluetooth Distance: About 33ftOutput Power: 6W 4SNR: 852dBFrequency Response: 100Hz-20KzDistortion: 0.5%Working Time: 8HCharging Time: 2.5HSize: Approx. 119.5x104x75mm / 4.7x4.1x3.0in.Package List:1 xBluetooth Speaker1 x Charging Cable1 x Sound CableNote:Please allow some error due to manual measurement.