Specifications:It is fully compatible with any media device with 3.5mm audio jack(such as mobile phone, tablet, computer, MP3, CD player, laptop), just plug it directly to play music or video, audio.This mini speaker is equipped with a 3.5W speaker that can amplify the sound of mobile phones, tablets, computers and other devices, maintaining high sound quality and clear bass.It has a mini compact and lightweight portable design, which is easy to put in your pockets, briefcases and handbags, and can be used anytime, anywhere.This mini portable speaker has a built-in 350mAh battery, which will not consume the power of the phone during playback.After the battery is dead, it can be fully charged by the Micro USB port(included) for only 45 minutes.No need to download any application or wait, just plug in the phone to use.Item Name: Mini SpeakerSignal to Noise Ratio: More than 80dBOutput Power: 3WMaterial: PlasticBuilt-in Battery: 350mAh(Included)Frequency: 50Hz-1800HzWorking Time: about 5HFeatures: 3.5mm Audio Interface, Clear Sound Quality, Mini Portable Design, Long Battery Life, Easy to UseSize: 47mm x 47mm x 34mm/1.85" x 1.85" x 1.34" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Mini Speaker1 x Charging Cable1 x User Manual