30CM, 50 CM, 70CM RING Pet Waterproof USB Rechargeable LED Dog Collar Night pet Safety Flashing Luminous Product Description: Item Type: Pet LED Collar Material: Silicone, ABS Colour: White, Blue, Green, Red, Pink Feature: Durable Target Audience: Dogs Length: 30 / 50 / 70 cm Flash Mode: Flash, Slow Flash, Long Bright. Power: USB Charging time: 30-40 minutes full, with charging indication, full of extinguished Luminous time: flash 3-5 hours, always bright: about 2.5 hours  Features: 1. Function: this product is suitable for pet to walk at night, and it has the function of safety warning. 2. Adjustable: the length of the pet silicone belt can be cut to adjust. 3. Charging Time: 30-40 minutes, with charging light instructions, and it will be out when being full. Luminescence time: flash 3-5 hours, often bright: about 2.5 hours. 4. LED: sufficient power, the visibility of the LED lamp can reach 500 meters. 5. More Choices: there are four colours for option, and you can choose the favourite one according to hobbies and demands.