Backup computer for tec dive?

[Chun Zhou]

As a tec diver, I am using Shearwater primary computer but want to find a proper backup one. I will do some deep dive like 100m - 150m. Please suggest and discuss with following aspects:

1. Economic solution, which means cheaper than another Shearewater
2. Back-light should be always on. Don't need to press any button. Raise your left hand and check.
3. Size. Suppose not a big one because it is just a backup.
4. Battery. I like the battery compatibility of shearwater a lot. In any case, you can open the cap and replace a full battery. But rechargeable solution is also accepted.
5. Depth. I am thinking of Deepblu as a good backup but unfortunately it only supports 100m.

 

[KevinNM]

If you are planning to do 150 meter dives don't worry about how much your computer will cost, it will be drowned by your helium and training bills. Or your rebreather + Training costs.

 

[Chun Zhou]

If you are planning to do 150 meter dives don't worry about how much your computer will cost, it will be drowned by your helium and training bills. Or your rebreather + Training costs.

Training and gas cost is another story. I have to pay that. But for computer, just want to find possibility that are not two Shearwater.

 

[Centrals]

I am pretty sure that late John Bennett did not use any computer for his 308m dive.

 

[Peter69_56]

Sorry, my main is a Petrel (or Predator if CCR) and backup a second Petrel. Reliable, consistent, easy battery change etc etc. I would only ever use Shearwater as they are so good.

 

[BazzaB]

So you would like to have something that has everything a Shearwater has, but not a Shearwater
May I ask why ?
I don't think a computer with similar specs would be much cheaper

 

[Chun Zhou]

So you would like to have something that has everything a Shearwater has, but not a Shearwater
May I ask why ?
I don't think a computer with similar specs would be much cheaper

An example is Deepblu. The cost is only $200 vs. SW $700. The rechargeable battery can be compromised. The only issue is the depth 100m limited, otherwise it is a perfect good backup. That is why I am thinking others.

BTW, if the primary broken underwater, I just need a timer and deep indicator and then follow my deco plan on board to complete that dive.

 

[Pkishino]

Why not pickup a second hand shearwater, like petrel or older? These are quite reasonably priced.. Seriously, compromise on costs at that level is quite.. Well, your call

 

[Caveeagle]

I have a couple options for backups. I have an older Dive Rite Nitek3 and a Hollis DG02. Both purchased for under $100 and work fine for a backup. The DG02 is what I use mostly, but it's not full time backlit. But it's small and with a DSS bungee mount, it does not get in the way, and goes on my forearm right next to my shearwater.

Having said that... I don't do 100m dives. If I did, a second shearwater would probably be on my other arm!

 

[kensuf]

Tech diving isn't a cheap sport and a 150m dive isn't something to go cheap on.