Feature: 1. The pocket-friendly body allows you to carry it with you in every moment of your life, whether you\u0027re camping or climbing a mountain. 2. Large volume combined with abundant power reserves, which create a better heavy bass effect than ever, bringing you the ultimate enjoyment of music at every moment. 3. A stable connection makes you never miss a beat. It can help to deliver High-Fidelity sound that will give you lossless sound quality enjoyment. 4. Equipped with memory card, USB flash drive, FM and microphone modes to provide more listening ways for users when they want to play SoundGo 4 without a BT connection. Specification: Features: The pocket-friendly body allows you to carry it with you in every moment of your life, whether you're camping or climbing a mountain. Large volume combined with abundant power reserves, which create a better heavy bass effect than ever, bringing you the ultimate enjoyment of music at every moment. A stable connection makes you never miss a beat. It can help to deliver High-Fidelity sound that will give you lossless sound quality enjoyment. Equipped with memory card, USB flash drive, FM and microphone modes to provide more listening ways for users when they want to play SoundGo 4 without a BT connection. Specifications: Size: 110x78x37mm BT Version: V5.0 BT Range: ≥10m Frequency Response:75Hz-20KHz Battery Capacity: 1200mAh Play Time: 3.5 hours Speaker Output: 5W Packing List: 1 * Wireless Speaker Package List: 1 * Wireless Speaker