Description: With bright clear light Low power consumption and long use time Convenient push-button on/off switch Main purposes: medical Body Material:anodized aluminum Powered by two 2 AAA batteries(not includ) Length:1.40 cm Diameter: 1.23 cm Packing: white box Color:sliver yellow,etc.Package includes: 1 x Medical pen light Push-buttontail cap switch Detailed Data ModelHZ-72241- 1LLEDMedical lightRUNTIME10hrsLENGTH140mmBEZEL12.3mm(diam)BATTERIES2-AAA