The Pocket Pro measures shot time intervals for personal practice and scoring matches! A timeless design that has set the standard for shot timers. Requires one 9 volt alkaline battery for operation.FeaturesReview up to 50 shots- forward or reverseErgonomic design allows right or left hand operation without covering the buzzer and sensorSaves batteries with automatic power down after 10 minutes of inactivityLarge display with .5 inch tall numbersDisplays time to 199.99 secondsAdjustable sensitivityDirect review of shots, split times, and shot numberPar time for a "second beep" to indicate a time limitSwitch selectable instant/random delayed startLarge clothespin style belt clip fits over your shooting belt.Separate shot sensor and buzzerLow battery indicationCompetition Electronic's 2 Year Shooting Product Warranty: 2 year warranty against defects in material or workmanship with dated proof of purchase.