The SportDog 10R does have a few disadvantages. 

SportDOG Battery Replacement Kit SBC-10R Green
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outlet HQRP Battery for Sportdog NoBark 10R Bark Control Collar SBC-10R SAC00-13057 Kinetic MH70AAAQ4GC Sport-dog No-Bark 10-R Colar + Screwdriver and Coaster
The SportDog 10R does have a few disadvantages.
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durable modeling HQRP Battery for Sportdog NoBark 10R Bark Control Collar SBC-10R SAC00-13057 Kinetic MH70AAAQ4GC Sport-dog No-Bark 10-R Colar + Screwdriver and Coaster SportDOG Battery Replacement Kit SBC-10R Green Green
Photo provided by FlickrSportDog™ SBC-10R replacement ring for sbc-10r dog bark collar
Photo provided by FlickrTROUBLESHOOTING for the SportDOG NoBark 10R
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The SportDOG NoBark effectively and humanely stops barking. The collar detects your dog’s barking and gives a correction, reminding him to stop barking. Most dogs quickly learn to stop barking when wearing the collar. The SportDOG NoBark 10R Collar uses several features designed to shorten the training phase and promote good behavior:The SportDog Bark Collar 10R is our most highly recommended bark collar.  It combines both a sound and vibration sensor to keep the rate of false alarms very low.  The SportDog, has the smarts to learn what level of correction is needed to stop barking and to be able to go straight to that level.  And it also includes a long-life rechargeable battery, in a medium size collar. The NoBark SBC-R uses SportDOG's "Silent Partner" technology to detect your dog's unique barking style and only then deliver a correction. By filtering out external noise, including another dog's bark, your dog receives the most consistent training possible. Choose from 10 levels of stimulation and 3 modes: Temperament Learning, Progressive Correction, and User-Selected:If the SportDOG Rechargeable NoBark 10R Bark Control Base Collar should wear out you must contact the SportDOG Company directly for a replacement. You can do this through their official website, by calling the business number, or by mailing them directly through snail mail. The replacement collars are not expensive and the item number to request is RFA-162-1. You should never use any other type of base collar for this bark control collar.We find the SportDog 10R has the lowest amount of false alarms of any system.  One disadvantage of this dual sensor is that the collar is hard to test out.  We know a lot of our more chivalrous (read foolhardy) customers like to try these collars out on themselves before trying it out on their dog.  With the collar requiring both  vibration and loud noise, this is a hard collar to trigger if you are not a barking dog. ]The SportDOG Rechargeable NoBark 10R Bark Control Collar is water proof as well as extremely comfortable for your dog to wear. It has 3 different correction modes to bark train him/her in a humane and harmless manner. The collar has a 1 year warranty, should it not meet your satisfaction. Take a look at if you’re interested.