mini size: 3.7in*1.6in, Compact with creative design Waterproof: PC material shell, IP55 waterproof, can use for outdoor Easy to install: Two kinds of installation tools, double-sided sticker and straps, with them, the alarm can be mounted on bicycle, motorcycle, car or other devices stably and stably Two methods Installation: Double-sided stickers or cable ties: It is convenient for anti-theft installation of various vehicles and batteries. Using three-dimensional displacement sensors and special algorithms, it can more accurately identify the theft and reduce false alarms such as noise interference. You can activate the SOS help function: when you accidentally fall down while driving, it will automatically send out help sound, giving you multiple guarantees. If the tilt is more than 45 degrees, it will automatically call for help, and if upright, it will automatically turn off the help sound. Product color: black Delivery quantity: Two pieces