Packing list: car bell x1, non-slip mat x1, strap x2, charging cable x1
Installation size: suitable for about 22.2-31.8mm handlebars
Weight: about 47 grams
Sensitively trigger the anti-theft alarm: long press the tail switch to turn on the anti-theft function. When someone moves the bicycle, the horn will sound an alarm to remind you. the alarm sound is as long as 15S, when it is triggered again, the alarm sound will still sound. only long press the tail switch to release the alarm