Streamlight® Headlamp, Multi-Function Rechargeable, Series: Enduro® Pro USB, LED Bulb, 15/25 Low Lumens, 50/90 Medium Lumens, 145/200 High Lumens, Flood/Spot Beam, 50000 hr Average Life, 3.7 V Lithium Polymer Battery, 1 Batteries, 4 hr Recharge, USB Cord, Yellow, Thermoplastic Housing Material, IPX4 Enclosure, 1.85 in H x 2.19 in W x 1.7 in D Dimensions