Aside from the design and ease of use through the app, I have no other positives. Its battery life is unjustifiable and completely unsuitable for professional use, which is what I wanted. It barely manages 2 dives a day, has no GPS, and in case of any mishap, it locks up and doesn't let you use it. I have dived and it interrupted the recording in the middle of the dive while it still had battery, and as a gift, it locked up for 48 hours. For amateur use, it might be satisfactory, but I can't judge.

Okay, apart from the appearance, it really isn't worth that much money. I bought it in 2019, and within the year they changed it under warranty because it couldn't last even one fishing trip. The battery, after the warranty, never lasted more than two to three days, and always needed charging after fishing. In December 2024, it barely lasts a day and a four-hour fishing trip. The battery replacement (sent to the manufacturer), as they told me in July 2024, costs about 250 euros. On the positive side, and that's why I'm giving it two stars, is the easy menu for free diving.

Coming from the d4f and using it in spearfishing as well as my main everyday watch, I simply declare myself thrilled! Beautiful, large dial, legible indicators, precise, with updates for calls, messages, and emails from my phone, and with an amazing application on Android and iOS! As soon as you come out of the water, you have all your dives on your phone, with the stamp, time, and temperature. The strap is very high-quality and appears to be very durable. The battery, when you deactivate the dive mode, lasts 2-3 days, which is great compared to the Apple Watch. I couldn't find a silicone protective cover for the bezel in the Greek market for fishing protection.

Simply perfect, I am very satisfied with the product. As for the reviews, it scratches very easily. I wear it daily and I am an electrician, so I have hit it countless times and it hasn't suffered any damage. In spearfishing, it offers a unique experience with the record of each dive, dive time, etc

I come from a Suunto Zoop Novo, I am a Rescue Diver with about 130 dives in Greece and abroad. I have made about 40 dives with the watch.
Positives
- Readable underwater and due to the fact that it is colored, all the information you need stands out.
- You can customize the different screens and the information provided if you connect it to Suunto's DM5 on the computer.
- Accepts transmitter.
- It is of high quality construction.
- It is rechargeable.
- Connects and automatically downloads dives to the Suunto application on the mobile.

Negatives
- Short battery life (2 full days with dives), I would like at least double the battery life.

For its price, it has no competition for me, and it also received an update (you have to do it manually through Suuntolink on the computer). The competition ranges in the thousands. I bought it as soon as it came out for 615E and it's worth every euro.

Excellent. User-friendly.
Significant difference compared to the previous D4i is the rechargeable battery through its charger.
Disadvantages:
1. The short battery life (based on my expectations) in full operation (2 to 2 1/2 days)

Very good watch and with the upgrade they made for me at the store, it became a smartwatch. Without reservation, a very good choice.

One of the best watches for diving. Both in autonomous diving and in free diving, if it had the option of recording daily steps and heart rate, we would be talking about the ultimate watch. Hopefully, the manufacturer will listen to us. The only drawback is that its battery runs out relatively quickly during use. That means it needs to be charged at least once a day.

Very bad for its price, firstly it does not have GPS. The component that connects to the bottle is not included

User-friendly menu, without lacking anything of course. Clear indications underwater, detailed and fully analytical. The most beautiful log book that you can easily wear every day without being bothered by its volume. Its battery easily lasts 3-4 days. The only thing that bothers me is that possible hits on the black matte paint of the metal will show badly. The strap made of excellent quality silicone can be easily changed with a click.
(Edit 2021:) A little while later, a very pleasant addition comes with the latest upgrade, which pleasantly surprises us and may even increase the value of the watch. It definitely gives us a reason to use it more. So, with the latest upgrade, it also became a smartwatch. You will love it even more, I appreciate it.....