Our 18" LED SLOW/STOP Paddle features 52 bright white LEDs on the "STOP" side and 59 on the "SLOW" side, ensuring maximum visibility for drivers day or night. Its lightweight and durable design make it easy to handle and withstand the wear and tear of constant use. The rechargeable lithium ion battery, automatic tilt lighting feature make this LED paddle a must-have for any traffic safety operation.1. Contains sensor: automatically lights up when lifted and automatically turns off when lowered, saves power, and is smart and convenient to operate.2. Battery life: flashes for about 10 hours, stays on for about 5 hours3. Convenient battery replacement: simply rotate the handle battery box, pull out or insert the replacement battery box, you can quickly replace the battery and extend the use time4. Charging port for handheld parking signs, battery-powered5. Additional USB port, can be used as an emergency mobile power supply6. Battery: 1 3.7v 2000mAh lithium battery7. Reflective film: double-sided reflective film8. Independent switch: independent switch on each side, independent control of each side function9. Function: flash-always on-off10. Charger: includes one charger + one car chargerThis product can provide electronic invoice