Features: 100% brand new and high quality 3.5mm AUX audio interface. Perfectly compatible with any media devices with 3.5mm jacks, such as mobile phones, tablets, computers, MP3, CD players, laptops Easy to use. Customers who use the built-in speaker do not need to download any applications or wait, just plug in the phone and use it. Clear sound quality. The mini speaker is equipped with 3.7W speakers, which can amplify the sound of mobile phones, tablets, computers and other devices, maintain high sound quality and clear bass. Mini portable design. The size of the mini wireless speaker is 46x46x33mm, compact and lightweight design, easy to pack in pockets, briefcases and handbags, and can be used any time, anywhere. This mini portable speaker has a built-in 500mAh lithium battery, which does not consume power from the phone during playback. After the battery is dead, it only takes 45 minutes to fully charge through the micro USB port (included). Package Includes: 1x Mini Wireless Speaker 1x Charging Cable 1x Manual Specifications: Colour: Black / Gold / Pink (Optional) Signal to noise ratio: >80dB Output power: 3W Material: Plastic Built-in Battery: 500mAh Frequency: 50Hz-1800Hz Battery Capacity: 3.7V/ 350mAh Working time: about 5h Net weight: about 85 grams Size: about 46x46x33mm/1.81x1.81x1.30inch note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.