• 【Enhanced Visibility for Night Safety】Designed with a built-in light strip and reflective strip, it ensures you're seen from a distance in low-light conditions.
• 【Customizable Light Modes and Colors】Featuring 5 vibrant LED colors (green, pink, blue, red, and white), this shoulder strap is built to stand out. Choose from three lighting effects: constant on, slow flash, or color cycling.
• 【USB Rechargeable】Equipped with a rechargeable lithium battery, eliminating the need for frequent battery replacements.
• 【Durable & Versatile Build】The shoulder strap features a multifunctional hook for attaching tools or accessories and a rugged design that holds up to running, cycling or commuting. 
• 【Adjustable Design】Elastic band with adjustable buckle allows for a comfortable fit for various body sizes, extending from 65 to 77cm.

Specifications:

• Battery capacity: 2 x 3V 150mAh rechargeable lithium batteries
• Material: Polyester latex yarn
• Length: 65-77cm (adjustable), Width: 3.8cm
• Light strip length: 21cm