HLPM3190 - msrp $134.50 9-ounce collar with one changeable 75-day lithium battery. Has standard 2-9 mile signal range HLPM3190/3280 - msrp $149.50  9-ounce Magnum Convertible Collar that allows user to choose signal range and battery life. Comes with 3 batteries: One 75-day lithium battery for standard 2-9 mile range, and two 25-day batteries for 4-14 mile range HLPM3850 - msrp $139.50 Lightweight 4.8 ounce collar with one changeable 25-day lithium battery & standard 2-9 mile range. HLPM3140 - msrp $139.50 9-ounce collar with sealed lithium battery that lasts 7000+ hours. Has a standard 2-9 mile signal range. HLPM3120 - msrp $139.50 5-ounce collar with a sealed lithium battery that lasts 2000 hours. Has a standard 2-9 mile signal range. Good for small dogs. HLPM31100 - msrp $144.50 Super-Life sealed lithium battery that lasts 16,000 hours. Weighs 15 ounces for big dogs. Standard signal range is 2-9 miles. HNCM3310 - msrp $154.50 Lightweight 7-ounce collar with rechargeable battery which has a life of several years & will last 5+ days on full charge. Has a standard signal range of 2-9 miles. Includes recharger. HNCM3700 - $154.50 Standard 9-ounce collar, rechargeable battery has several years life &, on full charge, will send signal for 11+ days. Has a signal range of 2-9 miles. Includes recharger. HNCM3450 - msrp $164.50 13-ounce collar with a High-Powered rechargeable battery that lasts several years & on full charge will send signal for 13+ days. Has a 3-12 mile range for use in rugged terrain. Includes recharger. TRX-3S - DISP msrp $299 (Mounted on folding 3-element Antenna, msrp $445) TRX-3S - RECH msrp $349 (Mounted on folding 3-element Antenna, msrp $495) Has 3 channels for locating 3 animals. Attenuator helps reduce signal strength to allow for close-in tracking. Weighs a lightweight 14 ounces. Choose disposable AAA or rechargeable nicad batteries. Has LED bar with flashing red lights to match beeping signal. Can be mounted on 3-element directional yagi antenna. Has -148 dBm sensitivity, with performance equal to TRX-10S. Receiver Includes carrying case with shoulder strap and belt loop. TRX-10S - msrp $435 (Mounted on folding 3-element Antenna, msrp $581) Has 10 channels for locating 10 animals. Signal meter has sensitive needle to match animal's beeping signal. Attenuator helps reduce signal strength to allow for close-in tracking. Weight is 1 pound. Powered by rechargeable batteries and by DC cord for vehicle cigarette lighter. Can be mounted on 3-element directional yagi antenna Includes recharger, DC cord, and nylon carrying case with belt loop. TRX-16S - DISP msrp $424 (Mounted on folding 3-element Antenna, msrp $570) TRX-16S - RECH msrp $459 (Mounted on folding 3-element Antenna, msrp $605) Monitors 16 animals on 16 continuously tuned channels. Can be mounted on 3-element directional yagi antenna. Lightweight 16 ounces; 6 3/4" x 3" x 1 1/2" dimensions. Has Noise Blanking Circuit to reduce unwanted sound. Signal reception is equal to TRX-64S. Receiver Attenuator helps reduce signal strength to allow for close-in tracking. Choose disposable AAA OR rechargeable nicad batteries. LED bar flashes red and moves right to match signal beep. TRX-48S - DISP msrp $524 (Mounted on folding 3-element Antenna, msrp $670) TRX-48S - RECH msrp $559 (Mounted on folding 3-element Antenna, msrp $705) Monitors 48 animals on 48 continuously tuned channels. Can be mounted on 3-element directional yagi antenna. Lightweight 16 ounces; 6 3/4" x 3" x 1 1/2" dimensions. Has Noise Blanking Circuit to reduce unwanted sound. Signal reception is equal to TRX-64S. Receiver Attenuator helps reduce signal strength to allow for close-in tracking. Choose disposable AAA OR rechargeable nicad batteries. LED bar flashes red and moves right to match signal beep. TRX-1000S (msrp $770) TRX - 2000S (msrp $935) TRX1000S WATER-RESISTANT (msrp $1195) TRX - 2000S WATER-RESISTANT (msrp $1360) 10,000 Hour Kicker (1yr Warranty) - msrp $135 10,000 Hour Kicker (5yr Warranty) - msrp $155 Magnum's most popular collar. Weighs 7 oz. and has10,000 hrs. of run time. 4,000 Hour Bantam (1yr Warranty) - msrp $135 4,000 Hour Bantam (5yr Warranty) - msrp $155 This is the collar to use on Beagles, field trial and endurance hounds. It offers a long run time, combined with small size and weight.