Speed measurement mode: using the distance between two measurements of the object to be measured and information on the time interval between measurements, the speed of the object to be measured is calculated. The golf-distance correction mode support both going downhill and uphill. Specification: Name: Multifunction Telescope Material: plastics Type: KM-M450 original-battery, KM-M450 rechargeable-battery, KM-M600 original-battery, KM-M600 rechargeable-battery (optional) Measuring-range: 5-450m/5-492Yd, 5-600m/5-656Yd (optional) Battery: 1 CR2 battery (not included) or 3.7V, 500 mAh rechargeable lithium battery (included) (optional) Measurement accuracy: ±0.5m Speed range: 20-300km/h Speed measurement accuracy. We offer the best prices around on high quality products.Our E-store includes media such as books, movies, music and games while offering electronics, toys, sporting apparel, clothing, tools, general home, garden items and more. We are always working hard to ensure your package arrives as soon as possible. We do not accept P. Please provide a physical address. We try our very best to make sure every customer is completely satisfied. If there's a problem, message us! We're happy to help. This item is in the category "Sporting Goods\Golf\Golf Tech\Rangefinders & Scopes". The seller is "igsha-3447" and is located in this country: CN. This item can be shipped worldwide.