Yesido Wireless Portable Outdoor Speaker YSW19 – Black Strap: Leather Wireless Version: 5.1 Product Size: 369*136*188mm Separation: 95% Playing Time: 4-5 Hours Signal-to-noise Ratio: 80dB Stereo: Single Track Output Rating: 20W*2 Bass Output Power: 10W*2 Frequency Response: 100HZ-12K Charging Time: About 3 Hours 1. Human Engineering: Arc Grip, Metal Breathable Mesh, Convenient Shoulder Strap. 2. Surging Sound Quality:double-core High-power Loudspeaker And Double-bass Diaphragm, Bass Enhancement. 3. Play Mode: Bluetooth/serial/tf/u Disk/audio Cable.. 4. Rgb Color: A Variety Of Colorful Streamer Lighting Effects, The Light Can Be Rhythmic With The Sound. 5.Tandem Experience: The Sound Of Two Pairs Is Doubled, And Listening Is More Personalized. 6. Microphone: Wired And Wireless Microphones Can Be Plugged Into K Songs Without Noise And Interference.