The Milwaukee Tool REDLITHIUM USB Neck Light, No. 2117-21, is ideal for delivering lighting for inspection work and general tasks, providing durability and adaptability with complete light head adjustability. With the ability to aim the light in different directions, the REDLITHIUM USB Neck Light provides lighting for those hard-to-see places. Featuring a press and hold power button, the neck light offers three output modes delivering up to 400 lm of Trueview high-definition output and two and half hours of run-time on high. It also features a sweat-resistant band and is IP54 rated.