Hot Spot&reg; Waterproof Rechargeable Wireless LCD Digital Dog Training Shock Collar with Shock and Vibration Modes, Remote Control up to 400m [Newest Model] The 10 levels of static correction let you adjust with the situation to find the best level for your dog, and increase it if she is really distracted. Additionally, the trainer includes positive and negative tone options. Rechargeable remote with backlit display; Easy to operate and read the modes and levels on the remote at dark environments. One second press on the menu button wakes it up from sleep mode; never miss any corrections again The wireless remote control has a range of 400 Meters in optimal conditions. NOTE: Please chnage the batteries fully before turning on the unit Rechargeable collar receiver. Collar is water-resistant but not water-proof. Delivers effectively harm-free vibration and static shock corrections. The system can be used with 1 or 2 receivers The shock function on this collar is suitable for medium and large dogs. Please don&#39;t try it on small dogs. We also suggest customer use low(level one) level shock on medium or large breed first