Built-in rubber nose piece. Rubber temple tips keep eyewear secure for the active worker. The L1154 alkaline batteries provides 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% UVA/B/C protection. The super bright pivoting LED bulbs (3 lumens per side) help you to see in dark places while keeping your hands free to do other task. Three batteries per temples (six total) are included.