I am an Chinese seller,providing customers with high-quality and low-cost products. The types of products we sell include Home & Kitchen,Health & Beauty,Fashion Clothing,Electronics,Watches & Jewelry,and so on. We keep up with the most popular fashion trends. If you like our products, please follow us and become our followers and fans. Sincerely at your service .Thank you for shopping and have a nice day.Specifications:Bluetooth wireless transmission, support for hands-free calls. Support the TF card automatic playback function.Support computers, mobile phones, MP3 players and other audio interface. Type: bluetooth-compatible SpeakerMaterial: ABSSNR: ≥80 (db)Impedance: 4 (Ω)Distance: 10metersRated Voltage: 5 (V)Rated Power: 3 (W)Bluetooth Version: 2.1Audio Interface: 3.5mmFrequency: 2402 - 2480MHzRated Frequency: 90Hz - 20KHzPlaying Time: About 1 HourExpand TF Card: 32GB (Not Included)Speaker Type: Portable SpeakerPower Supply: DC 5V, 300mAH Built-in Li-ion BatteryFeatures: Portable, Mini, Useful, Wireless, bluetooth-compatible Audio Input, bluetooth-compatible Hands-free Calls, LED LightSize: 6.1cm x 6.1cm x 6.2cm/2.40" x 2.40" x 2.44" (Approx.) Notes:Due to the light and screen setting difference, the items color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement. Package Includes:1 x bluetooth-compatible Speaker1 x 2 In 1 Audio USB Charging Cable