Material: PlasticColor: Army GreenSpecification :Bluetooth HandsfreeBluetooth Version: V4.0 Operating Range: 10mInterface: 3.5mm /USB 2.0 Frequency Response: 2.4GHz-2.48GHzApplicable Products: FM Frequency: FM78.8-FM106.1Supports Card Type: TFBuilt-in Battery Capacity :1500mAh Battery Type: Li-ion battery Music Play Time: 8-10HoursPlug Specifications: USBPower Supply: 3.7V DCProduct Features:Unique Rugged Square Design with Splashproof&Shockproof&Dustproof& functions make it suitable for outdoors and shower.Small and lightweight;with the lanyard， fits easily into your bag or pocket for on the go use，just set your hands free， making your travels more convenient.Featuring a large speaker cavity for excellent sound， this tiny but powerful speaker can fill any room with rich audio and clear and crisp music. The built-in 1500mAh rechargeable battery enables a breakthrough 8-10 hours of playtime so you can jam through a full day and it only takes 3-4 hours for you full charge the speaker.Included USB charging cale， it can recharge from your laptop， desktop， or powered USB hubConnect with any bluetooth-enabled device (Bluetooth 4.0) or just plug in with the traditional audio cable to start your tunes.NFC technology - Tap-to-pair with NFC technology for easy and instant connection (If your bluetooth audio device has NFC function).Packing list:1 x Bluetooth Speaker1 x USB Power Cable1 x 3.5mm Audio Cable1 x English & Chinese User Manual