1、MULTIFUNCTIONAL: Can be used as a shoulder light, warning light and gravity sensing night riding light to meet a variety of usage needs. 2、RECHARGEABLE DESIGN: The warning shoulder light adopts rechargeable battery, which is easy to recharge and can be recycled to save energy. 3、HIGH BRIGHTNESS: The shoulder strobe light utilizes high brightness LED beads to provide clear and bright light for enhanced visibility and safety. 4、UNIQUE CLIP DESIGN: LED shoulder strobe light can be easily clipped on the shoulder, not easy to fall off, suitable for all kinds of outdoor activities. 5、AUTO SENSING MODE: The LED shoulder light has a built in gravity sensor that automatically turns it on and off, providing a convenient use experience. Item Type: Warning Shoulder Light Material: Stainless Steel, Plastic Size: Length: Approx. 8.8cm / 3.5in, Width: Approx. 3.5cm / 1.4in, Height: Approx. 1.6cm / 0.6in Gross Weight: Approx. 100g/3.5oz Battery Type: Lithium Ion Battery (Shipped with Built in Battery) Battery Type: 3.7V Battery Capacity: 500mAh 1 x Warning Shoulder Light 1 x USB Cable