The Karlie Visio Light tube collar ensures better visibility when walking at dusk or when visibility is poor. The LED lights of the silicone tube are visible from a distance of up to 500 meters. The necklace contains a rechargeable lithium-ion battery and can be charged with a USB cable (e.g. on a computer). Therefore, there is no need to change the batteries. There is an adjustable flashing and permanent illumination option. The tube collar is suitable for neck widths from 20 cm to 70 cm and can be shortened individually. It is waterproof and CE-compliant. Instructions are included.