This DT Systems add on collar unit for the MR 1100 in Mossy Oak Shadow Grass Blades Camo is compact, lightweight, 100% waterproof collar is fully rechargeable Collar adjusts from 7 to 22 in increments & weighs only 4.7oz. Perfect solution for those that have 2-3 dogs!

• Add-On or Replacement Collar Receiver for MR1100
• MAXX Range 360 Internal Collar Antenna System with a 1100 Yard Range
• 16 intensity levels of nick and continuous static stimulation with positive vibration for a no shock alternative
• Light weight compact collar That fits small and large dogs (7" to 22" neck sizes)
• Rechargeable and completely waterproof collars