Features built-in rubber nosepiece and rubber temple tips keep eyewear secure for the active worker. L44 alkaline batteries provide up to 50 hours of use before replacing. Easy-to-use push button on/off switches are located at the top of each temple. Scratch-resistant polycarbonate lens provides 99% UV protection. Super bright LED bulbs (3 lumens per side) help user to see in dark places while keeping hands free to do other tasks. Three batteries per temple (six total) included.