There are two versions of LED collars.
1. USB charging version
Once the light gets weak, charging will help
Improve battery life
2. Button battery version
Replace the button battery when the power is off
CR2032 button battery x 2
Please choose the version you want according to your needs. (The collar with a battery or the collar with USB charging)

Battery: 2 pieces of CR2032 button batteries, the product is shipped with batteries, drive for about 30-40 hours, normal use for 2-3 months; the batteries can be replaced by themselves, and are available in convenience stores, shopping malls, electronic stores, watch markets, etc.
Charging model: charge for half an hour and use it for about 2-3 hours. There is a USB charging cable

Product advantages:

Provide safety for your dog and pet while it goes out alone at night.
Make your dog visible at night or in bad weather conditions
Helps ensure the safety of you, your dog, and other pets when walking.
Features: luminous, anti-lost, waterproof, sustainable use

Built-in luminous light bar for a dog collar

The size of each collar can be adjusted freely by 8 cm

feature:

Three flash modes
First click_flash
Second click_slow flash
Third click_Long light
(You can change the model through the on/off button)
Between different colors: yellow and orange have high brightness