DURACELLActivair Hearing Aid Batteries Size 312 (80 Batteries), Brown

One of the best companies I have ever dealt with. The device is extremely well made, easy to use, and can be used with almost any existing dog collar. I am a scientist and understand the requirements for devices like this very well. I’ve been using the whistle 3 for two months now and it has worked perfectly. You are notified within a few minutes when your dog leaves home (you are texted and or e-mailed a notification with her exact location/street address whether (yes its a she for me) you are with her or not. When we go for a walk it is never more than 10 or 15 feet off the exact address. You can open the app on your phone and see exactly where she is and where you are on a street map. Just like you can follow your travel in a car on your handy dandy gps. Today she is in St. Louis Mo, and I’m in Flagstaff Az. i can see what home she’s in and what she is doing any time I like.If she runs off I can track her minute to minute whether she is at home, at the dog park, or 2000 miles away...and I’ve done all of those things. Of course real time tracking will use up the battery faster so you may have to recharge it more than once a week. Well the damn thing is smart enough to send you a notification that it needs to be recharged soon too.It also sends you tons of info every day and weekly summaries too of activity (yours and your pets)Oh and the customer service is great too. They are responsive, communicate in people talk... not technical mumbo jumbo, and help you quickly resolve your problem or questions. I’ve had a few questions and they are spot on every time. Can’t think of but one or two companies in my lifetime who have been so pleasant and easy to deal with. Did I forget to say it is far less expensive than most of the competitive trackers and services? Nope, I just said it.I’d have to say the device and the company have far exceeded my hopes and expectations to this point. Worth every penny and more. Now if I could just figure out how to attach one these things to my kids I’d sign up for two more in a flash. If you love your pet you will love this tracker. 😀😃😀

This was my 3rd order for these hearing aide batteries. I am glad the container holding the batteries is small. It fits in my kitchen drawer easily for access.

These batteries keep my hearing aids going for about a day and a half. I used some after they expired and they still lasted an entire day. Will definitely buy again!

As described, good price, excellent date, delivered on time.

My daughter has a bone assisted hearing aide (BAHA). These fit her model and provide good service. They do not last a long time, but have given her good service.

Good product life. Long tabs easy to insert. Nice holder with 8 batteries, easy to keep in purse.

Last longer than any other brands Ive bought!

Good quality. Good price. Dependable vendor.