31.8mm Bike Stem 3-in-1 USB Rechargeable Bicycle Handlebar Stem with LED Headlight and Electronic Horn

Features: 3-in-1 design with bike stem,LED headlight and electronic horn. LED light increases visibility and safety when riding at night. Electronic horn helps warn pedestrians,vehicles,and cyclists. Built-in battery is rechargeable from laptop,computer,power bank,plug or any device with a USB port. Low battery indicator reminds you to recharge in time. Made of high-strength aluminum alloy and ABS material,very durable to use. Easy to install on bicycle handlebars with 31.8mm diameter. Specifications: Material:Aluminum alloy ; ABS Illumination Power:1.5W Dimension:145 * 50 * 68mm / 5.7 * 2 * 27in Weight:348g / 12.3oz Package List: 1 * Bike Stem 1 * User Manual