?With the Stylish Dustproof &amp; Shockproof &amp; Water-proof (Up to IP67 Standard)Wireless Stereo Bluetooth Speaker， you will thoroughly get rid of the littery cable of headset or other music player when listen to music from your portable devices at home or outdoor. And， you just need to pair you phone or other music player which support Bluetooth with the Speaker. After paired， you can immediately enjoy the music with the speaker that offer you great sound quality. It is perfectly suitable for home use， Indoor bathroom use， office use， Mountaineering， Pedestrianism， River Tracing， Relaxing， Travel， bicycle， camp use， picnic， etc.   Features: The wireless Dustproof &amp; Shockproof &amp; Water-proof Bluetooth stereo speaker let you enjoy music from all Bluetooth-enabled devices， such as， Smarts Phones， Tablet PC， NoteBook， Laptop， etc.  Supports NFC function and hands-free calls. Uses Water-proof， Dustproof and Shockproof design.  The Dustproof， Shockproof and Water-proof &amp;Water-Resistant (Up to IP67 Standard) Speaker is perfectly suitable for Indoor bathroom use and outdoor activities use， relaxing yourself anytime and anywhere. High-performance of anti-interference， high-speed data transmission and high-efficiency. High-performance speakers and built-in microphone that deliver clean and great sound quality. The hook design will bring you much convenience， for example， you can hook it on your backpack， bag or bicycle， etc. Easily control Pausing / Playing， adjusting the volume， previous / next songs， etc.  Powered by a included Micro USB charge port. Simple and clean in design， with unique appearance. With compact portable size， easy to carry， and you can put it on you office desk， beside table， sofa， etc to enjoy wonderful music.  Professional design for outdoor sports， such as， Mountaineering， Pedestrianism， River Tracing， Relaxing， Travel， bicycle， camp use， picnic， etc. Note: Water-Resistant Rate IP67 brings extreme performance of waterproof to the product， but submerged in water longtimeis forbidden.  Specifications: Brand Name: IWO  Model Number: PUK-F1 Bluetooth version: Bluetooth 4.0 + EDR ， Class 2 Support profiles: HSP， HFP， A2DP， AVRCP Supports NFC function Output Voltage: 3.7- 4.2V Operation range: 10m Waterproof: IP67 Standard， up to 1 meter depth. LED: LED light indicates power on. High-quality built-in rechargeable 3.7V / 600mAh lithium battery. Speaker Power / Impedance: 3W / 4ohm. Interface: Micro USB. Speaker Driver Specifications: Diameter: 50mm Channel: Mono Channel RMS: 1.5W * 1 THD: ≤ 10% Frequency: 200Hz ~ 20KHz S / N: ≥ 75dB Bluetooth Specifications: Operation Frequency: 2.4GHz ~ 2.48GHz Power out (peak) Class (4dB) Receiver Sensitivity: -91 dBm @ 0.1 % BER. Music Playing Time: 6 ~ 12 hours (at 70% volume). Charging Time: 1.5 ~ 2.0 hours. Input Voltage: DC5V 300Ma Auto off: Device will shut down after 5 minutes of inactivity. Color: Black， Blue (Optional) Main Item Size: 9.5 * 8.0 * 3.0cm / 3.74 * 3.14* 1.18in Main item weight: 124g / 4.39oz（Bare Machine） Package weight: 14.5 * 13.0 * 4.5 cm / 5.71 * 5. 11 * 1.77in Package size: 221g / 7.8oz  Package List:  1 * Wireless Stereo Bluetooth Speaker 1 * USB Cable 1 * Hook Chain 1 * English / Chinese User Manual.<br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>