You′ll have no excuses to refuse this PT390A Waterproof Wireless Bluetooth Speaker (Support NFC/USB/Voice Prompt) for its high practicality and stylish appearance. Waterproof， shockproof， dustproof， scratch and heat resistant， our wireless Bluetooth speaker could work in all kinds of conditions and environment， great for outdoor and travel use. With built-in microphone， it offers hand-free calls while you′re listening to the music. NFC technology adopted makes for convenient and easy for pairing. And voice prompt in English is available， too. Cannot reject it now? Get one!                                    Features            Waterproof， shockproof and dustproof， scratch and heat resistantFashionable and exquisite design， portable for go-anywhere music playNFC technology， convenient and easy for pairingHi-Fi， clear and loud audio outputBuilt-in microphone， offer hands-free calls while you’re listening to the musicIPX4 water resistant level， great for outdoor and travel useVoice prompt in English3600mAh high capacity battery for guaranteeing long working timePlease don’t soak it in the water in case of damage                                                            Specifications            Power Supply    USB-Charge    <br>Output Voltage    DC 5V    <br>Bluetooth Resolution    CSR 4.0    <br>Rated Power    5W    <br>Dimensions    (6.69 x 2.56 x 2.56) " / (17 x 6.5 x 6.5) cm(L x W x H)    <br>Weight    16.37 oz / 464 g    <br>Color    Green    <br>Frequency Response    20Hz-20KHz    <br>Battery Capacity    3600mAh    <br>Range    up to 10M    <br>Water Resistance    IP x 4    <br><br><br>                                                             Package Includes            1 x Speaker