Features:Support Bluetooth & Wireless transmission.Built-in Microphone, enjoying hand-free call.Adopt high quality audio decode chip ,let you experience perfect sound quality.Built-in charging battery and built-in high sensitivity Microphone, listening music any where.Unique water-proof design, using in bathroom, sand beach, swimming pool. While leisure, you can relax and enjoy wonderful music.Descriptions:The bluetooth speaker ensures shockproof, dustproof, waterproof level up to IPX4, suitable for outdoor use.Compatible with any Bluetooth capable player, phone or tablet.Suitable for car, bedroom, wash room, kitchen, office, conference, business trip, vacation etc.Special suction cup design, could sucked on any flat surface including desk, wall, window.Specifications:Color: black, pinkgreenyellowblueSpeaker Size: 85*45mm (Dia. x H)Bluetooth support: V 3.0 +EDRRange: 10 metersTransmitting frequency: 2.4G HZPower supply: DC5V/100-120mABattery: 3.7V 400mAh lithiumCharging time: approx. 3 hoursOperating time : approx. 6 hoursIP grade: IP x 4Frequency response: 100HZ-20KHZOutput: 3w S/NRatio: >75dbDistortion :<1.0%Package includes:1 x Waterproof Bluetooth Speaker1 x USB Charging Cable1 x Using Manual Notes:Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering.The color of the actual items may slightly vary from the above images due to different computer screen, thanks for your understanding.