Features :Multi-replay function2-line display， LCD DisplayPower: One AA size battery (not included)Suitable for KS3， KS4 and aboveAges 11 and overAuto power offSpecifications:240 functionsS-V.A.P.M Operating System164 scientific functionsMantissa + EXP: 12 + 29 memoriesFormula memory: 79 bytesMulti-replayDegreesRadiansGradiansDimensions:156 x 85 x 15 mm/6.14 x 3.34 x 0.59"Color: BlackWeight: 125gPackage includes:1 x Scientific Calculator(Battery not included)