The slim, compact dog device is optimized to work on all breeds and coat thicknesses, all with an effective range of ¾ mi. Its lightweight (3 oz) beeper is attached to the ¾" training collar and operated remotely with the handheld unit. With 4 hunt sounds (including silent) and 2 point sounds (including hawk scream), the beeper uses the latest in sound technology to achieve more than ¼ mi range to help locate your bird dog and know when it’s on point. The beeper has a locate feature, even in silent hunt mode. You can push the beeper button on the handheld unit and it will emit a series of tones as long as you’re pressing the button. If you want to hear the beeper only when you lose track of a dog, the locate feature comes in handy. 3 Ways to Train Your Dog: Choose from 18 levels of continuous and 36 levels of momentary stimulation, vibration or tone. With 5 correction/beeper configurations (viewable on the LCD display), you can choose the option best suited to the situation and dog temperament. Built-in BarkLimiter: BarkLimiter recognizes the difference between barking and other vocalizations, and vibration from scratching and scraping or from other dogs’ barks. So it virtually eliminates false and over-correction. The autorise function automatically adjusts correction to the optimum level to stop unwanted barking. Ergonomic Design: Delta Upland’s ergonomic design allows you to operate it with one hand. Its 3 front “action” buttons activate the beeper, stimulation, tone and/or vibration. Side buttons and an easy-to-read LCD display let you switch easily between training/beeper configurations and dogs (supports up to 3 dogs with additional dog devices). Tough, Waterproof, Long-lasting: Delta Upland is rugged and IPX7 waterproof. A long-lasting, rechargeable lithium-ion battery is included for both the transmitter and dog device, and the beeper includes a replaceable CR 123A battery. Handheld Physical and Performance: Unit dimensions, WxHxD: 2.1" x 5.4" x 1.1" (5.2 x 13.6 x 2.7 cm ). Weight: 3.7 oz (106 g). Range: 3/4 mi. Multi-dog compatibility: 3. BarkLimiter: yes. Autorise bark correction mode: yes. Battery: rechargeable lithium-ion (included). Battery life: 60 hours per charge. Waterproof: yes (IPX7). Floats: yes. Handheld Features: Correction levels: 36. Momentary/continuous correction: yes. Vibration correction: yes. Tone correction: yes. Training configurations: 5. Dog Device: Unit dimensions, WxHxD: 1.5" x 2.3" x 1.7" (3.7 x 5.9 x 4.2 cm). Weight: 2.4 oz (67 g). Battery: rechargeable lithium-ion (included). Battery life: 60 hours per charge. Waterproof: yes (IPX7). Floats: no. Collar compatibility: 0.75" (1.9 cm). Beeper: Unit dimensions, WxHxD: 3.7 x 5.9 x 4.2 cm (1.5" x 2.1" x 2.72"). Weight: 67 g (3 oz). Battery: 3v CR123A (included). Waterproof: yes (IPX7). Collar compatibility: 1.9 cm (0.75" ). Sounds: 4 hunt; 2 point. Can be heard for 1/4 mi or more depending on conditions and the hunter's hearing ability.Features: