NET PLAYZ Velocity X Baseball Speed Radar for Pitchers, Narrow Beam Technology for Accurate Pitch Tracking, Continuous or Single Speed Mode, 100 Reading Recall Het handhaven van een optimale Het handhaven van een optimale luchtvochtigheid voorkomt ijsvorming we recommend professional installation Manufacturer's Limited Lifetime warranty against manufacturer defects (Must fill out and return warranty card with a copy of the receipt and within 30 days of purchase date) Primaries: 1 Battery Requirement: 2 x Size C batteries (not included) it enables detailed performance tracking