Description: Material: Dog Collar Light is made of ABS pp and can withstand temperatures from -40C to 50CHigh Visibility: Dog Lights for Night Walking uses high brightness LED lights to provide stable lighting. In dark outdoor environments, the visible distance can reach 5 kilometersWaterproof Design: Dog Light has an IPX8 waterproof rating and adopts a high precision waterproof design that can withstand depths of up to 100 metersLong Standby Time: Dog Walking Light can provide up to 92 hours of standby timeMultiple Working Modes: Dog Necklace Light has four working modes, constant brightness (press once), fast flashing (press twice), color fast flashing (press three times) and color slow flashing (press four times) Specification: Visible distance: 5 kmWaterproof level: IPX8Working environment: -40C-50C Size Chart: 5cmx7cm/1.97inchx2.76inch Package Includes: 1 Dog Collar Light1 USB charging cable1 instruction manual Note: Please allow slightly errors 1-2cm differences due to manual measurement.