?Overview: Is your Bluetooth speaker water resistant， dustproof and shockproof? S777 Outdoor sports speaker not only has these functions， but it also has power bank function. This product has used ISSC Bluetooth chip that is the most stable Bluetooth solution 3.0+ EDR. It is compatible with up to V40 Bluetooth version. It has built-in microphone and support hands-free calls. It also supports wireless Bluetooth audio & video transmission and compatible with phones/3G table PC with Bluetooth function. Its 4ohm speaker provides perfect sound quality. Its action is better than excitement. Own it now. Enjoy the perfect sound experience of this speaker! Brand: N/AModel: S777Quantity: 1 PieceMaterial: Silicone shellColor: Black- Parameters:Bluetooth version: V4.0Frequency: 2.402~2.480GHzOutput power: 10WMicrophone sensitivity: 32dBReceiving sensitivity: >82dBmReceiving distance: 30mData transmission: >4.0MbpsUART data transmission: 115200bpsBluetooth antenna: Built-in Bluetooth antennaCharging voltage: 3.7V~4.2V DCWorking voltage: 4.8V~5.5V DCPlay time: 50 hours (Depends on the volume control and play time)Charging time: 7hPower bank capacity: 7000mAhInput: DC 5V 1500mAOutput: DC 5V 2600mADisplay screen: NoFM function: NoSpeaker type: subwoofer- Features:1. Support Bluetooth wireless transmission2. Built-in microphone; can enjoy hands-free calls3. Uses high quality audio and video decoding chip， can enjoy perfect sound quality4. Unique waterproof design; can be used at bathroom， beach， swimming pool and so on5. Fashionable and simple design， portable and practical 6. IP64 level waterproof and dustproof， with hands free call function and 6W high frequency speaker; Wireless audio and video transmission， supports all digital devices with Bluetooth function; Wireless hands-free call， compatible with all phones with Bluetooth functionPacking List:1 x Bluetooth speaker1 x Carabiner1 x USB cable (100cm)1 x Audio cable (104cm)1 x English user manual<img src="//112.74.112.28/down/products/435272/435272_000.jpg">