Slicemall 330 Yards Rechargeable Remote Dog Collar with Blue Backlight LCD POWERFUL- 4 Modes: Shock Electric/vibration/alarming Sound/flash.330 Yards Remote Range.100 Levels Of Vibration And Static Shock For Different Dogs. POWER SAVING - Design With Automatic Standby And Memory Function,which Can Automatically Switch To The Standby Mode. CONVENIENCE OF OPERATION - Quickly Signal Connection Of The Receiver And Transmitter Within 10 Seconds, Easy-to-read Lcd Screen Shows The Stimulation . Backlight Lcd Screen For Easy Low Light Condition Viewing. ADJUSTABLE - Fits All Dogs. From 15 To 120 Lbs With A Nylon Collar Size From 7 To 27 Inches Long. DURABLE - Upgraded Materail And Ic,80% Longer Lifetime.