If you have spent any time browsing e-cigarette reviews on this site, you know that electronic cigarettes come in all shapes and sizes. One of the newest e-cigarettes on the market comes from one of the original ecig mod makers. The SD Keychain by Trog is an interesting hybrid of a stealth e-cigarette mod and standard electronic cigarette. The most notable thing about the SD Keychain is its diminutive size (and price). In the SD Keychain review that follows we’ll see if good things really do come in small packages.
What’s in the Box
Or in this case, packaging. The SD Keychain comes in one of those blister pack type containers complete with the little punch hole to hang it on a retail display. The instructions are printed right on the back of the packaging. This is a fairly humble kit, so there’s not a lot of things to unpack:
1 SD Keychain battery
2 pre-filled cartomizers (generic tobacco flavors)
1 keychain lanyard (attached to the SD)
1 510 USB charger
The single biggest thing about the SD Keychain is its size. The Keychain is positively tiny. Lengthwise, it’s considerably shorter than a traditional e-cigarette and a bit thinner than an eGo electronic cigarette.
Matched with a standard cartomizer or atomizer, the e-cigarette easily fits into my fist for grabbing a vape on the sly. Oddly enough, it also pairs pretty well with a cartomizer tank — though I would recommend a single coil cartomizer over a dual coil in this case.
The overall design of the SD Screwdriver is simplicity itself. The device is fairly hefty for its size which indicates it’s likely constructed of stainless steel. The top of the device sports a 510 connector, while the bottom of the tube has the SD log screened on it.
There is a small lanyard attached to the tube with a key ring attached to the other end. Yep, the SD Keychain is actually a keychain. You can remove the keychain portion if you don’t intend it to hold your keys alongside your lucky rabbit’s foot and 32 shopper loyalty cards.
Other than the lanyard, the tube is totally smooth. There are no lights and no buttons. The SD Keychain is an automatic device all the way. While I’m still not the biggest fan of auto batteries, it seems to work for this device.
Using the SD Keychain
The keychain’s size and sturdy construction make this device one of the most pocketable around. Despite its size, the SD Keychain has a 300mAh battery on-board. This certainly won’t give you that “all day vape.” It does however work as a backup e-cigarette or in times where discretion is warranted.
The lack of lights and easy palming of the SD keychain makes it a perfect stealth mod. It also does perform well as a traditional device. Unfortunately, because of the automatic battery, I wasn’t able to get any voltage readings, but I suspect it outputs at least 3.7v.
When not in a stealthy mood, I’ve actually taken to bolting on a full-size 5ml cartomizer tank on the SD keychain. I have to admit it looks a little strange since the tank is much bigger than the e-cigarette its perched upon. I’ve ordered a smaller 3.5ml tank from MadVapes to help balance out the looks.
Inside that tank I’m using a SmokTech 1.7Ω single coil cartomizer (I think dual coils require more oomph). Vapor production is excellent with this combination. Battery life suffers a little, but I was still able to coax over 2 hours of run time out of the device with this configuration. Don’t try that with a regular 510 e-cigarette!
I haven’t really run into any funky issues with this device, save for one. This isn’t really even native to the SD Keychain, but a potential issue with most automatic e-cigarette batteries. One of my tanks leaked while the keychain was sitting upright dumping e-liquid straight down the hole in the atomizer connector on the keychain.
Almost immediately, the SD Keychain started activating on its own. Fortunately, I was able to quickly remove the atomizer and get the excess juice out of the device. After a some airing out time (and some crying), the little e-cig that could started working like a champ again. I, however, would advise you do your best to keep e-liquid from dripping into the 510 connector.
Too Long; Didn’t Read
The SD Keychain is a tiny automatic e-cigarette designed by one of the original mod makers. The device feels solid and performs fantastically despite not being a manual device. While 300mAh won’t last you all day, it’s a lot better than most standard e-cigarettes. Its performance and incredibly compact size make it a great candidate for a stealth, backup or ultra-portable device without damaging the wallet. You can grab yours from ElectronicStix.com (International readers, see the details section)
Do you have an SD Keychain (or just an opinion?) Let’s hear it in the comments section below!
- Solidly built
- Great performance
- Automatic batteries more failure prone
- Not an all-day device
- Not the greatest key ring in the world
Product Name: SD Keyring by Trog
Buy it at: ElectronicStix
International customers can buy one from Liberty Flights (save 10% with code SteveVape)
Battery: Sealed, 300mAh