Zealot M2 8W Portable Outdoor RGB Bluetooth Speaker, without Microphone 1. 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. Three-unit Sound, HIFI-quality Sound in a Small Volume: Built-in professional-grade audio chips, 52mm full-range speakers + double bass passive diaphragm design bass thick as thunder, treble clear and bright. 360 degree surround sound effect wherever you can enjoy an immersive music experience! 4. RGB Colorful Light Effect: The upper and lower diaphragms are embedded with intelligent RGB light bands, and 16 million colors can be switched at wiltto support multiple modes of music rhythm, gradient, and breathing. Night camping lights and starlight intertwined, instantly transformed into an atmosphere maker! 5. Extra Long Playtime Fearless Outdoor Challenges: Stable performance of 1800mAh large-capacity battery, long battery life even outdoor travel can be accompanied by a long time, uninterrupted listening! Specifications 1. Bluetooth Version: 5.4 2. Transmission Distance: Approximately 10m 3. Music Listening Time: Approximately 4-5 hours 4. Charging Time: Approximately 34 hours 5. Signal-to-Noise Ratio: more than or equal to 85dB 6. Operating Voltage: 3.7V 7. Frequency Response: 20Hz-20kHz 8. Battery Capacity: 1800mAh 9. Speaker: 4Ohm, 8W 10. Distortion: Less than 1% 11. Functions: Bluetooth, SIM Card, USB Drive, Data Transfer