Features: Mode: 3 modes Light Color: Red Alarm sound: 120 decibel Remote distance: 1-100m(Open area) Battery: 3.7V 800mA lithium battery Waterproof: IPX5 waterproof Lamp beads: COB light source Buzzer material: copper Remote control battery normal use about 8-12 months Remote Control Fixed Position,can find your bike in 100m. 4 in 1 intelligent sound and light anti-theft alarm taillight. Ultra-high 120 db alarm. Three modes to change. Wireless Bell function. COB Taillight function. Remote Alarm function. USB Charging IPX5 waterproof Neat & Nice Design Charging Time 2-3 Hours,for more than 30 days Standby / 15 to 20 days Being Used Warning: 1.Keep away from children play. 2.Please do not directly at your eyes with taillight,avoid unnecessary harm. 3.Do not place the alarm on your ear,avoid pressing the alarm button or hearing damage,at least two meters away from your ears. 4.After long time not to use,you need to make it full charged when you use it again,and when you charge it,the light will alarm sound. 5.Suggest you to regular charge it if you do not use it for a long time.includes:1 x Alarm taillight 1 x Remote control 1 x Remote base 1 x Charging cable 1 x Installation tools 1 x Bandage 1 x Mounting screws 1 x Holder 1 x User Manual