Nathan's trail-friendly Zephyr is powered by two AA batteries, and kicks out over 200 lumens of crisp, clear Run-Right Light®. Use the 120 decibel fold-out safety whistle to alert other runners—and bears (oh my!)—of your presence.

Specs

• LED: 200 Lumen Main Beam
• Battery: 2xAA
• Burn Time: 40 Hours (Low), 24 Hours (Medium), 9 Hours (High)
• Water Resistance: IPX4 – Weather Resistant