Wireless Sprint Timer, 1.8" 5 Digit Display Battery Powered Race Clock Stopwatch with Battery Percentage Reminder for Racing Roller Skating Track Field Athletic Training

Spec: Item Type: Sprint Timer Material: Aluminum, PC, ABS Timer Power Supply: 1 x 4000mAh Lithium Ion Battery (Built in) Repeater Power Supply: 1 x 1500mAh Lithium Ion Battery (Built in) Screen Display: When timing is less than 60 seconds, display (XX.XXX) (format: seconds.milliseconds) When timing is between 60 seconds and 9 minutes 59 seconds 59, display (X.XX.XX) (format: minutes.seconds.milliseconds) When timing is larger than 9 minutes 59 seconds 59, display (XX.XX.X) (format: minutes.seconds.milliseconds) How to Use: Take out the product and follow the instructions manual. Package List: 1 x Timer 1 x Repeater 2 x Reflector 4 x Ground Stand 3 x Stand 2 x Charging Cable 2 x Antenna 1 x Storage Box 1 x Instruction Manual Note: 1. Do not direct the beam towards the eyes. 2. The distance between the reflector and the timer beam must be at least 5 meters. 3. The timer has an anti misfire mechanism. Triggering within 1 second after the timer starts will be invalid. The interval between two triggers must be at least 1 second. 4. Do not use a quick charger to charge this product (chargers typically marked with 6V, 9V, or 12V; these are prohibited).

• Battery Powered: This sprint timer is powered by battery and can be used for 8 hours after 5 hours of charging, with battery percentage reminder, easy to use.
• High Precise: The effective light distance is >8m. The screen adopts five digit display, accurate to 0.001 seconds. The one hour timing error is less than 0.001s.
• Auto Reset: The track field timer will automatically reset and enter the next round of timing when triggered again, without the need for manual reset.
• Wide Application: This timer is suitable for timing when the starting and ending points are at the same position, can be used for motorcycle races, karting single lap timing, timing, balance bikes, roller skating, pet training, and athletic training competitions.
• Portable Design: The sprint timer comes with a sturdy storage box, which is water proof and shock proof, making it easy to carry around.