The H20 1820 Plus is a completely RECHARGEABLE system, transmitter and remote and Features:
The Addition Of Vibration Assist & Vibration + Stim (VS 1810) 1 mile (1800 yard) range
16 levels of Gentle Touch™ Nick and Continuous stimulations
Rechargeable and waterproof collar unit and handheld transmitter.
No-Slip/Soft-Grib rubber coating
100% Waterproof FLOATING transmitter & Waterproof collar
MAXX-Range™ 360 Internal Antenna System
Built-in safety shutoff
Expandable to two or three dog units with Add-On collar units Easily adjustable buckle type collar strap adjusts from 8" to 25"