The Streamlight SL-SideSaddle USB is a compact, unobtrusive lighting system designed to mount onto hats, hard hats, and helmets. It stays clear of essential gear. Dual LEDs offer spot, flood, and combo beam options, while a blue safety taillight boosts visibility from behind. A push-button switch with mode memory remembers your last setting. The light is IPX7-rated and waterproof to 1m for 30 minutes. Spot: 350 lm on high for a 6.25-hour run-time, 100 lm on low for a 12-hour run-time. Flood: 325 lm on high for a 7-hour run-time, 85 lm on low for a 12-hour run-time. Combo: 400 lm on high for a 5-hour run-time, 160 lm on low for a 7-hour run-time.