Manual ultrasound dog repellent, one key operation, simple and quick. Strong ultrasound voice, high effect wihtout delay. Can be frequency conversion ultrasound, prevent single sound lost effect after long time use. Improve pet dog training effect. Features: ABS lastics cover, lightweight and delicate in shape, portable to use. Manual one key operation, simple and quick. Strong ultrasound voice, high effect wihtout delay. Single function, green display lamp, stable performance. Cell supply energy, detachable and easy to replace. Can be frequency conversion ultrasound, prevent single sound lost effect after long time use. Specifications: Material: ABS Color: Dark Gray, Black, Dark Green (optional) Operation: Manual Way: Button Function: Can Be Frequency Conversion Cell: 4 * AAA Cell (not included) Effective Range: 5m / 16.40ft Package Weight: 71g / 2.50ounces Item Size: 95 * 42 * 33mm / 3.74 * 1.65 * 1.30in Package Size: 110 * 60 * 40mm / 4.33 * 2.36 * 1.57in Packing List: 1 *