Note: The NiteRiderA(R) Lumina(TM) Dual 1500 is shipped from the factory in Travel Lock Mode. This mode feature is designed to save battery power by preventing the head light from accidentally turning on while in storage. Simply press and hold power button 8-10 seconds to lock / unlock. Its dual LED set-up puts out enough light at 1500 lumens to be more than capable navigating the toughest off-road terrain, while being nimble and versatile enough to tackle those long and arduous paved commutes. FEATURES a Lumen Output: 1500 a 7 Modes with Run Times: 1:15-20:30hrs a Charge Time: 3:30 hrs a Weight: 258g a Battery: Li-Iona Low Battery Indicatora USB-C Rechargeable a Boost Mode for Maximum LED Outputa Boost Mode indicator, power button will light up red and bluea Water / Dust Resistant IP64 Rated RUN TIMES*Low - 10:15h at 400 LumensMed - 5:45h at 750 LumensHigh - 3:00h at 1200 LumensBoost - 1:15h at 1500 LumensPulse Flash - 12:30h at 1200 LumensFast Flash - 18:00h at 1200 LumensWalk - 20:30h at 130 Lumens *Run times are approximations and may vary ! Warning Hot Surfaces !Do not use the Lumina(TM) as a hand-held lighting device when in high and boost modes!