"WORLD'S FIRST SHOT-TRACKING RECHARGEABLE LASER RANGEFINDER The aim L20 is the world's first shot-tracking smart OLED range finder. The aim L20 is smaller and the measurement speed is a faster and more compact design for optimal. With ZST+ technology, the measurement speed is increased to 0.15 sec.KEY FEATURES:2 Color (Green, Red) High Transmittance OLEDHigh-Performance Shot Tracking management with ‘GOLFBUDDY: GOLF GPS App’ via BluetoothGOLFBUDDY Zero-Second Tech+ picks up accurate readings in 0.15 secondsThe SLOPE LED shows the slope ON/OFF status. (ON: Green / OFF: Red)Easy Pin Finder Mode -Press and hold Power/ Measurement button to activate Pin Finder ModePutting range (2~880 yards) You can also measure the distance while putting.Vibrate function - Accurate measurement with Vibration AlertDESIGN 2.0 - Compact design for optimal gripIPX4 Water-ResistantRechargeable Li-ion battery (C-type charging port) A fully charged battery can be used at least 4000 timesUSGA / R&A legal for handicap & tournament playTECH SPECS:Size: 4.04” x 2.31” x 1.36” (102.8x58.7x34.7mm)Weight: 6.06 oz (172g)Color: Space Grey / MetalDisplay: High Transmittance OLEDAccuracy: +/-1 yardRange: 2~880 yards (2~800 meters)Magnification: 6X magnificationBattery: Rechargeable (Li-ion) USB C-typeWater Resistance: IPX4 (Light rain)"