Compact and Portable: Mini Bluetooth speaker, lightweight and simple, designed with a hand strap for easy carrying, so you can listen to music anytime. Clear Sound: Wireless mini speaker with built-in power amplifier, delivering clear and loud playback with strong volume. Multi-Function: Small subwoofer speaker with memory card, USB, and FM function to meet your needs for various usage scenarios. Stable and Sensitive: Bluetooth speaker uses a 4.2 chip to provide a fast and stable connection with low power consumption, suitable for indoor or outdoor use. Premium Materials: This portable speaker is made of premium ABS plastic and fabric material, providing a delicate feel and a more fashionable appearance. Main Function: BT, memory card, USB, FM BT Specification: BT 4.2 Power: 3W Battery Specification: 300mAh Playback Time: 2 hours Audio Channel Mode: Mono Playback Format: MP3, WMA, WAV Amplifier Specifications: 3W x 1 BT Distance: <10m/32.8ft Expansion Memory: 16G Frequency Response: 80Hz-20KHz SNR: ≧75dB Charging Parameters: 5V 0.3A Includes: Mini BT Speaker, Data Cable Your 100% satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage or incorrect quantity, please contact us immediately and we will provide you with the best solution!