More Details:        <br><br><br> Specification: Brand Name: Remax Model Number: RM-X2 Volume Output: 5 Watts Working Frequency: 60HZ ~ 20KHZ Charging Voltage: USB， AC\/DC ADAPTER 5V Bluetooth Version: 3.0 Battery Capacity: 800mAh Batter Charging Time: 2 hours Peak Volume Output: 6 Watts Less than 10% THD Decibel: 75dB Continuous Playback Time: 2 hours (Have litter difference in different using environment ) Dimension: 100 X 80 X 37 mm Color: Yellow， Red， Green， Blue. Net Weight: 160g   Features: 1. High definition sound， wireless Bluetooth. 2. FM radio， with wireless Bluetooth hands-free call， you can enjoy the ultimate freedom. 3. Intelligent， compact and fashionable design， dustproof &amp;amp; shockproof， specially for outdoor sports and outdoor relaxation. 4. High capacity Lipo battery， continuous playback nearly five hours.     Large diameter passive radiator， the sound quality is outstanding than others. 5. Equipped with a standard 3.5mm external audio source input port， wide-range in application.<br>     Package Included:  1X Mountaineering Carabiner  1X Charging Cable