The 640 C is an ultra-compact remote trainer. It has all the features of larger Dogtra collars but is designed for dogs as small as 5 kg (10 lbs).
- Precise stimulation levels (0 - 127), without jumps between levels.
- Nick and Constant Stimulation and non-stimulating Pager/Vibration
- Maximum range: 600 metres.
- Compact receiver for smaller dogs.
- Waterproof transmitter and receiver.
- 2-hour rapid charge Lithium-Polymer batteries.
- Weight of the receiver/collar: 115 g.
- Available as two-dog unit: 642 C