Feature: 1. Portable Bluetooth Speaker: With Bluetooth 4.2, enjoy the convenience of wireless connection and easy calling with this lightweight and portable speaker. 2. Impressive Sound Quality: Designed with a subwoofer, this speaker delivers outstanding sound performance for a truly immersive music experience. 3. Built in Memory Card Slot: Easily play your favorite music directly from a memory card, allowing for convenient access to your music library on the go. 4. Perfect for Outdoor Activities: With its compact and portable design, this speaker is ideal for outdoor events and travel, ensuring you can enjoy music wherever you go. 5. Long Battery Life: Experience extended playtime with the built in 400mAh lithium battery, allowing you to be in uninterrupted music enjoyment. Specification: Item Type: Small Bluetooth Speaker Material: ABS Connection: Bluetooth Connection Bluetooth Protocol: 4.2 Frequency Response Range: 100HZ to 20KHZ SNR: ≥75dB Power Supply: 400mAh Built in Lithium Battery (Shipped with Battery) Sound Channel: 2.1 Playback Duration: 3h Effective Distance: 10 Meters Operation Mode: Button Support Format: U Disk, Memory Card With Or Without Radio Function: Yes. Package List: 1 x Small Bluetooth Speaker