Welcome to our store!</br> 1、HIGH DECIBEL: The alarm sound can be up to 110 decibels at testing distance of 10cm, which can effectively warn passersby and vehicles. 2、CONTROL DISTANCE: This bike alarm supports remote control, with an open distance of 50‑80 meter, it is recommended to use at 10‑20 meter. 3、BUILT IN BATTERY: Equipped with 500mAh lithium battery, charged for 2‑3 hours, with a standby time of over 30 days, and used for about 15 days. 4、CHARGING INDICATOR: When charging, the red indicator remains on, blue flashes, when fully charged, the red indicator goes out, and blue flashes. 5、MULTIPLE CONTROLS: 1 host can adapt to 5 remote controls, 1 remote control can control multiple hosts at the same time, support multiple users and multi point control. 6、PLASTIC HOUSING: The wireless vibration alarm adopts plastic shell, waterproof and rainproof, with good toughness, can be used in various environments. <p class="wang-edit-text"><p class="wang-edit-text"> Item Type: Electric Vehicle Alarm Material: ABS, Electronic Component Alarm Battery Type: 500mAh Lithium Battery (built in battery) Remote Control Battery Type: 3 x 75mAh CR2032 Button Battery (built in battery) <style> .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }</style> 1 x Alarm 1 x Remote Control 1 x Charging Cable 2 x Ties 1 x Screwdriver 3 x Screws 1 x Nut 4 x Accessories 1 x User Manual (Customer Satisfaction) - is our priority. If you notice any problems with the products after receiving the goods, such as damaged goods or incorrect quantity, please contact us immediately. We will do our best to provide you with satisfactory after-sale service.</br>