Mini size: 65mm*45mm, compact with creative design.Waterproof: PC material shell, IP55 waterproof, can use for outdoor.Super loud alarm: 113dB, 7-level adjustable sensitivity.Ease of use and installation: Wireless remote control, easy to use. Two installation methods, stick with double-sided sticker or bind it with strap.Flexible Options: Whether you need extra remotes for your family member or just for spares. Please refer to More remote control in Special offers and product promotions.13db very loud burglar alarmOnce triggered, a very loud 113 db alarm will be an effective deterrent, effectively scaring away bicycle thieves.Main functionsArm and disarmTouch sensitivity adjustmentSelect the bell sound.Unique key vehicle.SOS functionsLow battery indicatesBike alarmRemote control - simple and convenientArm key: Press it once, the host alarm will enter Arm mode, 5 seconds later, the alarm will ring Bi. The alarm will be triggered and sound if vibration or tremor is detected.Disarm Key: Under Armed Mode, press this key, the alarm will exit Armed Mode and return to standby mode.Even if the host alarm is triggered, the alarm sound stops immediately when you press this key.Change key: Press this key to select ringtone. 6 voices are available.Ringtone key: the alarm sounds the selected ringtone if you press this key, so it's easy to find your bike.