Waterproof Handlebar Bicycle Horn Alarm for Cycling USB Rechargeable

Features:
Compact size and light weight with high volume of sound.
Built-in 280mAh lithium battery takes only 1.2 hours to full charge and works for up to 20-30 days, about 2,000 rings.
Long power consumption, standby over 180 days.
Made of high-quality ABS material, weather-resistant and durable.
Extremely easy to install with the adjustable rubber band, suitable for 22 - 31.8mm handlebars.

Specifications:
Material: ABS + PC
Battery Capacity: 280mAh
Charging Time: 1.2 hours
Charging Voltage: 5V
Charging Current: 250mAh
For Handlebar: 22-31.8mm diameter handlebar
Waterproof Level: IP65
Size: 49 * 66mm / 1.9 * 2.6in
Weight: 40g / 1.4oz
Package Size: 91 * 68 * 43mm / 3.6 * 2.7 * 1.7in
Package Weight: 70g / 2.5oz

Package List:
1 * Electric Bike Horn Bicycle Bike Bell
1 * Rubber Band
1 * Charging Cable
1 * User Manual