Built-in high-capacity 5,500mAh rechargeable battery
Equipped with sealed lead-acid battery with MP3 player, USB, T-flash card slot supports FM tuner audio output
Two brightness settings
Provide shining duration of 7 hours with high-brightness, or 21 hours with standard brightness, music player for 24 hours
Ultra-long illumination range of about 270 meters
Battery lifetime more than 500 charging cycles
Built-in USB charger for mobile phones, MP3 players and more
Dual-recharge, either AC/DC charger or 12V DC car plug charger (both included)