1.SMART BIKE TAIL LIGHT WITH 5-IN-1 FEATURES - With electric bike horn / anti theft vibration alarm / rear bike light / bike turn signals / automatic bike brake light 5 functions in one unit. It ensures your when riding, especially for night riding. Then arm it by alarm function and take remote off after riding to prevent theft and provide additional security for your bike. 5 functions allow you to save more space on your bike and save money. An affordable & practical bike accessories 2.WIRELESS REMOTE & USB C RECHARGEABLE - model remote with large diameter which can clamp easily to 0.93-1.26 inch handlebar grip or handlebar. Strong wireless range about 98 ft-196 ft. USB C Rechargeable bike tail light comes with USB C charging cable, battery-saving technological lithium battery, you don't need to charge frequently, about 6h full charge the taillight alarm can work up to 70 hours (on fast blinking mode) 3.BIKE TURN SIGNAL LIGHTS WITH CLICK SOUNDS - Easily press the R/L button of remote which clamps to handlebar before you turning, and right /left turn signal lights flash with click sounds. Other drivers and pedestrians will not just see you but hear you from afar and know exactly which direction you'll ride 4.SMART BIKE BRAKE LIGHT (build in G sensor) - Once you brake the rear light will auto highlight for 2s to alert other drivers behind you, effectively avoid rear-end collisions and traffic accidents. NOTE bicycle brake light function only work on Slow Flashing/Breathing/Fast Blinking/Steady Light mode 5.ULTRA BRIGHT BICYCLE REAR LIGHT WITH 6 MODES - 6 light modes easily selected by remote. Super bright and extra-wide bike taillights with 31 high-end LED lights, up to 160 lumens of powerful flashes alert motorists at night and during the day, that enhance your visibility and . Slow Flashing/Breathing/Fast Blinking/Steady Light/Emergency Light/OFF 6 modes 6.VIBRATION ALARM WITH 7 SENSITIVITY LEVELS - Anti theft bicycle alarm triggered by vibration, can help to deter thieves effectively, provide additional security and give you peace of mind when your vehicles park outdoors. 7 levels adjustable sensitivity from gently touch to push or beat, you can easily adjust the sensitivity as your need 7.BIKE HORN WITH 3 SOUNDS - With electric bicycle horn function, makes 110 decibel bike horn sound when press remote to let pedestrians or drivers know you're coming. 3 horn sounds for your choice, electric car horn sound/horn sound /birdcall sound 8.SMART AUTO ON/OFF - Build in light sensor and motion sensor. On Slow Flashing & Breathing modes, tail light will auto shut off after 30s of inactivity in dark environments, and auto light up when motion is detected. And in bright outdoor environments it will auto shut off to save power, if you need tail light in day time, you can select Fast Blinking/Steady Light (these 2 modes have not smart function). (Note: Indoor environment is dark environment, no matter if the lights are turned on or off)