【Super Bright D Dog Collar】- Dual fiber optic design increases the brightness of the collar by 50%. The super bright light ensures that the safe visible distance at night exceeds 500m. Keep your dogs safe in the dark, and you will find your pet easier, easily visible to motorists, walkers, joggers, cyclists, motorists, etc.【Durable USB Rechargeable Dog Collar】- a designed your light collar with dental nylon, durable enough for the most active dogs. And the dog collar is charged via the DC cable (included in the package) without replacing the eco-friendly battery. Recharge by USB cable with any other daily use device. 250mAh battery, 2H full charge, can keep working for 10H. Very convenient for your life.【Waterproof and Adjustable Dog Flashing Collar】- Our flashing dog collar is waterproof, it can still work normally in harsh environment, rain, snow or other bad weather (not for swimming) . Available in 3 sizes (small, medium and large) and 4 bright colors. Easy to put on with a quick