Zealot MP2 20W Portable Outdoor RGB Bluetooth Speaker1. Portable and Outdoor Ready: It is designed to be easily carried around and is suitable for outdoor activities like camping and hiking. 2. Bluetooth 5.4: Bluetooth 5.4 for a stable and efficient wireless connection. 3. 52mm Dual Speakers, Surging High Bass Surround: High and low-frequency speakers plus bass double diaphragm, can produce thick heavy bass effect. 4. Two Wireless Connections, Stunning Surround Sound: Support two speakers wireless serial connection, left and right channel independent output, experience the cinema level surround sound feast.5. Extra Long Playtime Fearless Outdoor Challenges: Stable performance of 3600mAh large-capacity battery, long battery life even outdoor travel can be accompanied by a long time, uninterrupted listening!Specifications1. Bluetooth Version: 5.42. Transmission Distance: Approximately 10m3. Music Listening Time: Approximately 4-5 hours4. Charging Time: Approximately 34 hours5. Signal-to-Noise Ratio: more than or equal to 90dB6. Operating Voltage: 7.4V7. Frequency Response: 20Hz-20kHz8. Battery Capacity: 3600mAh9. Speaker: 20W10. Distortion: Less than 1%11. Functions: Bluetooth, card slot, USB flash drive, data transfer