Product Parameters: Model Number:JR-M02 Color:Black,white Bluetooth Version:Bluetooth 4.2 Material:ABS Speaker:Double magnetic speakerΦ52mm(4Ω/5W) Transmission Range:About 10m Frequency Response:100hz-20khz Output Power:5W*2 Signal to Noise Ratio:75db Built-in Battery:3.7V 2400mAh Charge Voltage Current:5V/1A Charging Time:3-4 hours Play Time:4-5 hours Product Description: Classical design Brand new Bluetooth 4.2,efficient and stable,lower power consumption,transmission farther,more stable function,so you easily enjoy music anytime and anywhere Can be the artwork at home Creative design Focus on the detail. Package Included: 1 x Bluetooth Speaker