1.Color: Fluorescent green
2.Material: prism-reflective film sewed on 100% Polyester elastic band
3.LED light numbers: 14
4.Charge: USB
5.Voltage: 5V
6.Battery capacity: 120mA lithium battery
7.Charging times: Recycled 300 times
8.Width: 4.7cm
9.Waist size: 70-105cm
10.Length: 36-53cm
11.USB length: 54.8cm