Usage Tips:High Precision Measurements: Reliably captures speeds with exceptional accuracy. Clear LCD Display: Easily read measurements in real-time. Robust Construction: Built to withstand regular use in diverse environments. Portable Design: Compact and , making it easy to carry to different locations. Test scope: rate: 0-3600 rounds per minute (0-60 rounds per second) Initial velocity of : 15-800 meters per second (50-2600 feet per second) firing energy: 0-500J Horizontal range at a height of 1M: 0-400 meters (0-1250 feet) Accuracy: Test error less than equal 1.3% Working voltage: DC 4.5V Working environment temperature: -10 ℃-+50 ℃ Batteries:3xAAA Batteries,not included Due to different batches, there may be differences in product printed text, which not affect use Colour:Blue Material:ABS Package Contents: 1x Speed Tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.