The best of both worlds! Combination light with USB charging. LED front light with 800 lumens and built-in Bluetooth® control and LED rear light with 80 lumens. MAX LUMINOUS INTENSITY Front: 800 Lumens Rear: 80 Lumens LAMP Front: Cree XP-L2 LED Rear: Red COB 3W LED BATTERY Front: 3.7V 3500mAh Lithium Ion (integrated) Rear: 3.7V 1000mAh Lithium Ion (integrated) CONTROL / BURN TIME (APPROX) Front: 5 Modes: High - 800 lm (3.5 hr) / Middle - 400 lm (5 hr) / Low - 200 lm (9 hr) / Blink - 200 lm (20 hr) / Pulse - 400 lm (40 hr) Rear: 3 Modes: High - 80 lm (3.5 hr) / Middle - 40 lm (5 hr) / Low - 20 lm (7.5 hr) / Blink - 30 lm (20 hr) / Pulse - 50 lm (40 hr) INPUT Quick charge 2A CHARGE / CHARGE TIME APPROX USB-C / 2 hr RESERVE TIME 0.5 hr SIZE Front: 10.5 x 3.5 x 3.1 cm / 4.1" x 1.4" x 1.2" Rear: 8.1 x 3.9 x 3.3 cm / 3.2" x 1.5" x 1.3" WEIGHT Front: 125 g / 4.4 oz (Light only) Rear: 51 g / 1.80 oz (Light only) WATERPROOF IPX 6