Specifications:
- Input: 100 - 240V, 50 / 60Hz
- Output: 5V, 0.5A
- Transmitter battery voltage: 3.7V
- Receiver waterproof level: IP67
- Battery type: lithium-ion battery (built-in)
- Transmitter charging time: 4 hours
- Transmitter standby time: about a week
- Receiver charging time: 4 hours
- Receiver standby time: about a week
Applicable Dog Breed:  Large Dog,Medium-sized Dog,Small Dog  
Weight:  0.30kg
Package weight:  0.31 kg  
Package Size(L x W x H):  16.00 x 15.00 x 5.30 cm / 7.48 x 5.91 x 2.09 inches