About this item 5 LIGHTING MODES: The powerful bike light with front, fog and indicator light has 5 lighting modes. Anti-vertigo convex lens bike light can shine easily and go far to ensure your bike safe in the night. With 2 amber fog lights, 10 red COB light beads on both sides for warning effect. IPX 4 waterproof, the bike light can powerfully illuminate the road even in foggy or rainy days. BIKE SPEEDOMETER: With the LCD bike light display, you can observe the speed, time, temperature, fat and calories consumed, total or one-way mileage. The lighthouse bike computer has 7 kinds of data recording mode: Total Mileage\/ Hourly 24H Total Mileage\/ Idle with Time\/ Total Mileage with Stopwatch\/ One Way Mileage\/ One Way Mileage with Grease\/ One Way Mileage with Calorie. LARGE SPEAKER ANTI-THEFT: The atv lamp has 5 kinds of ringtones. Double switch buttons for light and buzzer respectively, it is more convenient. In addition, the bicycle light has an anti-theft alarm mode. Long press the switch for 3 seconds to activate the alarm mode. After 2 seconds, the led bike will enter the defensive state and alarm will be issued when hit. Built-in speaker for easy reminders. USB RECHARGEABLE BIKE LIGHT: The bike light is USB rechargeable with a built-in 1200mAh battery. You can charge the bike light with the AC adapter\/power bank\/computer. The fully loaded automatic shut-off system guarantees safety. The powerful bike light can also be used as a flashlight, helmet headlight for cycling, hiking, running, camping, walking or any daily activity. EASY TO INSTALL: The light front bike is equipped with a mounting bracket that can be easily attached to the handlebars. The nylon cable ties for headlight and taillight are designed with multiple openings that can fit tightly around most seatposts. The product contains installation instructions in English. For French installation instructions, please contact customer service.