Welcome to our store! Introducing our line-in speaker, designed for ease of use and convenience. Simply connect your phone and start enjoying high-quality audio instantly. The 3W speaker delivers clear bass and high sound quality with an SNR>80db, allowing you to amplify the volume up to 4 times. This speaker is compatible with a wide range of media devices that have a 3.5mm jack, including mobile phones, tablets, MP3 players, CD players, and laptops. The handheld design makes it portable and easy to carry in your pocket, briefcase, or handbag, so you can enjoy music or videos on the go. With a battery life of 4-8 hours, this mini speaker has a built-in 300mAh lithium battery that won't drain your mobile phone's power during use. When the battery runs out, simply recharge it via the included micro-USB port in just 45 minutes. 100 percent Satisfaction Guarantee: Our customers are our top priority. If you encounter any issues such as product damage or incorrect quantity upon receiving your order, please contact us immediately. We strive to provide you with excellent customer service. Thank you for choosing our line-in speaker!