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⚡ Grind smart, live fresh — elevate your herb game effortlessly!
The Banana Bros OTTO Electric Smart Spice Grinder is a sleek, rechargeable herb mill featuring patented AI sensor technology that automatically adjusts grinding speed and pressure for uniform, aroma-rich results. Designed with portability and precision in mind, it offers one-touch operation and mess-free dispensing, crafted from durable aerospace-grade aluminum for reliable daily use.







| ASIN | B089V6MV7T |
| Best Sellers Rank | #29,000 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #32 in Herb & Spice Mills |
| Brand | BANANA BROS |
| Brand Name | BANANA BROS |
| Color | Black |
| Customer Reviews | 4.2 out of 5 stars 1,722 Reviews |
| Item Highlight | One-press automatic spice prep device for consistent results with less mess, No carrying case. |
| Item Weight | 470 g |
| Manufacturer | BANANA BROS |
| Manufacturer Part Number | OTTO1-BKUS-00845 |
| Material | Aerospace Engineered Aluminum |
| Material Type | Aerospace Engineered Aluminum |
| Model Number | OTTO1-BKUS-00845 |
| Number of Items | 1 |
| Operation Mode | Automatic |
| Recommended Uses For Product | Home, Picnic, Camping |
| Set Name | No Set |
| UPC | 854674008455 |
| Unit Count | 1 Count |
D**M
Strongly recommend
I purchased this grinder as a gift for my father, who uses flower for medical purposes. After seeing it in person, I was impressed by the overall build quality. The finish is well done, and it feels like a very well-made product. My father is over 70 years old, and he finds it easy and convenient to use. He has been very happy with it so far. Because of the positive experience, I’m planning to purchase a few more as gifts for friends ***My father had never cleaned the device, so the inside became quite sticky over time. I’m helping him clean it now, and it seems to be working much better afterward. Because of the way the device works, I think it’s a good idea to clean it regularly after use. A little maintenance goes a long way in keeping it performing at its best.
S**Y
Great quality
Ordered 2 weeks ago and waited to write a review to make sure I was 100% honest. It is great I have used it several times now and have not had any problems at all worth the investment for sure. I would definitely buy again or even buy one for a gift!
M**S
super easy to use
I have arthritis in my right hand and there are days when it hurts to use it so I smoke to relieve the pain and grinding with my original grinder sucked as some days I couldn't even grab it let alone twist it. Now it's all just a push of a button and this grinder lets me fill a bowl with auto stop when its full. I love this grinder absolutely worth every penny. Just have to remember to turn it off, wish it had an auto shut off, but no big deal.
J**O
The Fyre grinder
I loved it at first, until I discovered It doesn’t live up to the hype video. This products promotional video doesn’t describe what the product actually does. It’s an extremely overpriced grinder, which can’t handle grinding more than a small nugget of spice at a time. It’s also not durable, can’t say that I’ve used it over 20 times and the metal 4-leaf clover washer, which is inside the magnetic port, for the blade broke. the battery life when fully charged is very poor, you’d be able to use it 3-4 times if you feed it small nuggets, 7-8 times if you use scissors to precut the nuggets into small pieces, which defeats the purpose of this poorly produced product. They should have saved the money on the fancy box and put it into using better quality materials for its manufacturing. I thought I found the perfect Christmas gift, but nope. The one star is for the promotional video which suckered me into buying this. I would have returned it but due to me being out of the country for a few months I missed the window.
M**.
The good, bad and Ugly
Now to my review of the auto roller. I’ll start with the good then to the bad. The good. :It rolls joints :Supper high quality moldings on the plastics with a nice anti stick almost soft plastic texture. That part is expensive to manufacture so big points to that. The fit finish alone makes me know this is not a cheap item. :It’s a well thought out unit. (See the pic with this text). In the open position the hinge is maxed open but rests perfectly on the table like dead nuts perfect. Again making it feel like it’s a premium product. :I’ve ran around 1/3 ounce through it and it’s to the point it needs to be cleaned. Still works fine so points. :I’ve never had to unclog it or have it not grind all the bud. :The preprogrammed grinding sequence it does is very smart. Almost makes you think it’s getting feed back and changing how it grinds based on load…not the case but still points for making me think that’s a possibility The bad. :Battery life is not the best you get around 6-10 joints per charge over 2-3 days in my experience. Not terrible but not great. :It does not work while plugged in and charging. I’m going to go on a rant on this topic but it’s pretty unacceptable for any DC product to not work while plugged in and charging. It’s a $0.03 one way mosfet to add that functionality. :It uses a micro usb as the charging port. It’s 2025 and we got Apple to use type c. Everything should be type c.
J**D
Good for arthritis hands
Super easy to use with arthritis riddled hands! Looks silly because obvious joke but works wonders!
X**X
Good product. Good service. Real quality of life improvement.
This is such a quality of life improvement. The device is designed just right to be able to make it easy to get a balanced well burning cone made in seconds. Easy to clean. If it does jam, it’s entirely a sign that you haven’t cleaned it. A simple cleaning, and it starts to work perfectly again. Recharges through USB. They nailed it. And customer service is amongst the best I have ever had. I worked in this industry for years and still advise many businesses in it. They could all learn something from Banana Brothers.
C**T
Really nice grinder set up
Best grinder ever I bought on sale and my friend luckily had an extra bottom piece that will fill your cone paper with ease. You can roll your tobacco or other product in seconds literally. Great value for the money, charges fast, but make sure you buy the complete set up otherwise your just buying a really nice grinder.
A**E
Die ist mal super,klasse.
Ich benutze es für mehrere Sachen.
J**R
Bigger than I thought
Good product works well
A**A
No es funcional
No es funcional. Cualquier grinder hace lo mismo por un precio mucho menor. Lo voy a devolver porque dejó de prender.
W**E
Homart team
Verry nice product
C**Y
Assistance
Pretty good cheers
Trustpilot
3 weeks ago
3 days ago