Specification:Material:ABS; Color:Black; Voltage:1.5V; Max count:0-9999 seconds; Power Supply:1 x AG13 Button Cell Battery(Not included); Size:6.5 x 3.5 x 2cm/2.5 x 1.3 x 0.7inch; Weight:Approx.30g; Features:Portable and easy to use. Small and handy size. Add or Subtract. On/Off/Reset Buttons. Small cord for grip. LCD Screen/ Max count 0-9999s. Sound timing: "Di Di" sound when counting. Operating Instruction:To Switch On-Press On/Off/Reset Button,The Unit Will Display"0". To Add Counts-Press the Green Button(+),It Will Beep on Each Count. To Suntract Counts-Press the Red Button(-),It will beep on Each Count. To Switch Beep Off or On at Any Time-Hold the green or red Button Down for 3 Seconds. To Reset Tally-Press On/Off/Reset Button for 3 seconds. To Switch the Tally Off-Press the On/Off/Reset Button for 3 Seconds When the Counter Display is at"0". Package included:1 x Golf Scorer (Battery is not included);