Portable 3.5mm Plug-in Mobile Phone Amplifier with MP3 Playback

Enhance your mobile audio experience with this compact and versatile plug-in device. Featuring a 3.5mm connector, it easily attaches to your smartphone, providing amplified sound quality on the go. Its built-in MP3 playback functionality allows you to enjoy your favorite tracks without needing additional gadgets. Designed for convenience and portability, this amplifier is perfect for music lovers who demand superior sound anywhere, anytime. Simply plug it in to transform your phone into a powerful audio player. Interface Type: 3.5MM audio jack Frequency Range: 60Hz-15KHz Output Power: 3W Signal-to-Noise Ratio: ≥75dB Power Supply: Built-in lithium battery Operation Method: Plug and Play Number of Speakers: 1 Effective Distance: 15 meters Battery Capacity: 300 Playing Time: 6 hours Shell Material: Plastic Physical Dimension: 41*41*34mm Product Weight: 0.05 Packing List: Charging cable, instruction manual Playback Format: MP3 Speaker Adjustment Method: Button Manufacture country: China Instructions included: No