Winfi,LAKA,Eebuy,Itlink,Besgo&reg; Bottle Opener (a) Power supply: 2 x AAA battery (the batteries are not included) Measures in Celsius or Fahrenheit (Range: -58~716 / -50 to +380) Auto Shut-off & Data Hold Function & Low Battery Indicator & Backlight Display Selection Red laser pointer for precise aiming Take accurate temperature readings with this handheld gun