Glowseen LED Dog Collar -Available in 5 Colors & 4 Sizes- USB Rechargeable - Makes Your Dog Visible, Safe & Seen Glowseen use dual optical optics that provide high illumination for your pets, keep them safety and be spotted , Be seen and Be safety with fun .Easy to find your pet at darkness too. USB Rechargeable Battery; eco-friendly, no more wasting money on cell batteries, and more economical and convenient than that of battery powered versions for daily using. Rechargeable Via Any USB outputs 5V/1A- ( Charging cable included) -Each charging will take 1-2 hours that can working 4-6 hours ,enough for one time dog activities Three working ways: Constant on/Quick Flashing/Slow/Flashing, just one click to choose it . Use our collars, walking dog is becoming more enjoyable and fun at night with safety and Eye-catcher