Need more than 1? Choose the number of sets in the dropdown to receive a bulk buy discount up to 20% off This Electric Bell With High Volume Ringtone And Long Standby Is Very Convenient For Your Cycling Trips. Features: Compact Size And Lightweight 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 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 / 2.5OzYou Will Receive: 1X Electric Bicycle Bell