No more complex training. With the Delta SE handheld and dog collar, you and your canine companion have everything you need to sit, stay and play the easy way. Product Features Train simply with the small, ergonomic 3-button handheld. Enjoy three ways to train, including stimulation, tone and vibration. A slide switch makes training up to two dogs1 easier than ever. Stay connected with your dog at up to a half-mile range. Tactile dial helps you and your dog stay focused while training. Product Specifications DIMENSION: Handheld: 2.1 x 4.9 x 1.1 (5.3 x 12.5 x 2.7 cm) Dog device: 2.3 x 1.4 x 1.4 (5.8 x 3.5 x 3.5 cm) WEIGHT : Handheld: 3.0 oz (86 g) Dog device: 2.5 oz (71 g) WATERPROOF: IPX7 BATTERY TYPE: rechargeable internal lithium-ion; nonreplaceable (both handheld and dog device) BATTERY LIFE: Handheld: 70+ hours Dog device: 60 hours INTERFACE: USB-C