The H20 1850 is DT's Mid level Beeper Trainer combo, Features: Completely RECHARGEABLE system, transmitter and remote with Beeper system audible to 450 yards
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 dogs (total) with Add-On collar unit Easily adjustable buckle type collar strap adjusts from 8" to 25"