· USB Rechargeable & High Efficiency Battery: The dog bark collar are powered by high-performance rechargeable 480mAh lithium battery, which features high energy density, low power consumption, and long battery life. It can keep the bark collar working time up to 10-15 days according to use frequency after 2-3 hours fully charged. It also adds overload protection[Red Battery Indicator] and low battery alarm[Blink Green Battery Indicator], reliable and safe to use.
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