Features : Support for Bluetooth & Wireless transmission, and TF card play.Built-in Microphone, enjoying hand-free call.Five colors for choosing: Blue, green, red, yellow and blackAdopt 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, IPX7.You can relax and enjoy wonderful music.Suck on back side of for tablet or other tablet become a stand.Special suction cup design, could sucked on any flat surface including desk, wall, window.Suitable for car, bedroom, washroom, kitchen, office, conference, business trip, vacation etc Specifications : Bluetooth V3.0Operation distance: ≤10MOperation frequency: 280 hz - 20 KHZImpedance: 4ΩOutput power: 3wAudio signal -noise ratio:≥ 80dB USB charging voltage: DC 5VWorking voltage: 3.7V-4.2V+0.05VBattery: 500mahWorking time: 10 hours on medium volumeAudio input: Bluetooth & LINE-IN&TF cardCharge time: 3-4 hoursSize: 87*45*95 mmWeight: 145 g Package content : Wireless Bluetooth speakerInstruction manual