YiHorn 800M Rechargeable Waterproof LCD Shock Vibra Remote Pet Dog Training Collar No Bark Collar with Blue Backlit Display for Large and Small Dogs Remote Dog Training E-Collar; Rechargeable remote with backlit display; Easy to operate and read the modes and levels on the remote at dark environments; The wireless remote control has a range of 800 m(2500ft) in optimal conditions One second press on the menu button wakes it up from sleep mode; never miss any corrections again; The shock function on this collar is suitable for small (12+ lbs) and large dogs Rechargeable + Waterproof receiver collar; Delivers effectively harm-free vibration and static shock corrections The system can be used with 1 or 2 receiver;In each mode, you have 8 level Shocks,8 level Vibrations and 3 level tones. The levels can be increased or decreased easily; You can set different level corrections in each mode and choose the proper mode according to your dog behavior; Please don't try it on small dogs and we also suggest customer use low(level one) level shock on small or large breed first