Specifications: Material: Plastic, Metal Size: 31x7cm Power by: 1 x 9V battery ( included) Features: 1. Detecting the Best and Optimal Time for Mating Bitches. 2. Identification of so called False Heat, Silent Heat and Ovarian Cycle Disorder. 3. Elimination of problems associated with disorders during heat. 4. Effective in Time Saving and Reduction of Costly Visits to the Vet. 5. Reduce Financial Costs and Expenses Associated with Multiple Mating. Package Included: 1 X Dog Ovulation Detector 1 X Case