The integrated ZITHION™ battery recharges via USB-C and runs continuously for up to 3 hours on low Despite its mere 2.4-inch frame, this little luminary shines its mini flood beam in three light modes—high, low, and Turbo—with a peak brightness of 380 lumens and a beam length of 73 meters (239 feet) Use the split-ring key ring to attach the light to any set of keys, the lanyard inside a travel bag, or anywhere else to keep illumination at the ready wherever life takes you Constructed of ultra-tough composite with a stainless-steel bezel, the KL20R meets IP54 specifications for water resistance and dust resistance and is backed by the COAST lifetime warranty.