The vari-cool option has a new switching regulator that increases battery life, over the original. The regulator also limits the amount of current going to the switch, protecting it. There is no master on/off switch. Dial it down when putting in purse or pocket. The mod does not come with an atomizer, batteries, or charger. Check out the 10440 power kit that comes with 4 high drain batteries, and a dual charger. High drain batteries are recommended for all Variable Voltage mods sold here. This mod uses 2 10440 3.7v LI batteries. There is a 7 day wait for the Little Sister Vari-Cool mod.There is a $3 charge for black and a $5 charge for pink or purple.
Posted by Unknown on 29th Apr 2013
this little mod is totally amazing,I've been vaping over 3 years I remember
this mod was out then though without vari cool I bought one of those and loved it,shortly after the vari cool came out,I bought one of those and it
doubled the battery life.I unfortunitly shorted out that one by touching the
electronics with the dime I opened it with.and now I just purchased the second vari cool.this puts out more voltage than my evic.it vapes like a champ like no other tiny mod,this is the smallest mod out there.
Posted by Carly on 12th Mar 2013
I've had my lil sister for over a year and loved it, very cute, small and ideal for what I wanted!
I killed it though by spray painting it and now the switch won't turn off :(
Posted by JJ from GA on 19th Jan 2013
Got my first little sister and loved it so much I ordered a second! For stealth, convenience, variable voltage, and a good deal...you can't go wrong. They are light, batteries are economical, and the vape is stellar!
My only whine is I wish he would use a different switch. No problems so far, but I feel the need to be extra careful cuz it just 'feels' vulnerable.
Posted by James on 30th Dec 2012
I received mt LS VC a week ago. This thing rocks! Variable voltage in a tiny package that isn't shaped like a pipe bomb or whatever else someone might mistake a tube mod for. ;) Works like a charm, and battery life is actually quite good; just have 6 or so batteries and you're good to go. This thing is perfect when matched with a small RBA. Lovin' it.
Posted by Unknown on 21st Jul 2012
The best i ever owned. Started with 3.7v fixed Little Sister and eventually got the VV Little sister.Amazing vapor production and battery life. Small and light to carry around.Best for stealth vaping too.
One thing i don't like is the button. Pls improve the button quality! so it doesn't spoil easily!
Other than that, you MUST try one!
Posted by Rimp/Pat on 10th Apr 2012
I have 3 Little Sister's and just ordered another:) I carry 2 around all day at work and they are very lightweight but really pack a punch! I love variable voltage and the small size of these. I agree they'd be more durable in a metal case....Ken your public has spoken. Please consider a metal case:) But for the price and portability and function you can't beat a Little Sister.
Posted by dshelk on 5th Apr 2012
Not sure what happened with the previous guy but I've had mine for over a year and it's still kicking just fine. I don't carry mine around much, though, so it never gets crunched and tweaked around in a pocket or such. I use my original boxmods for every day carry around. The Little Sister, however, is PERFECT for that 'first smoke o the day' with coffee and after meals. Dial-in that perfect vape full of flavor.
Posted by Robert M on 22nd Jan 2012
We're going ahead and ordering our second little sister because we like it so much and because we can't do without it for as long as it would take to do the reasonably priced repair.
Our little sister is failing after about 90 days. If I had a soldering kit or some glue, I'd do the repair myself, but alas, no. The build quality on this unit is not very good, but it's hard to get mad at an inexpensive, small sized VV mod that gives us the power (up to 6V) that we need to get a real hit.
And that's what vaping is all about - the hit. The little sister has the power to produce a super solid hit of great tasting vapor. So it works and works well - far better than the myriad of other mods we've tried. I'd say the hit is every bit as good as my ProVari - and my wife likes it even better. How bout them apples!
I'd love to see a focus on better build quality with this unit. The plastic casing is OK (metal would of course be a better choice), but the interior parts such as the vaporizer base are simply glued to the interior plastic to secure them in place. And with repeated screwing on and off of the cartomizer, it's only a matter of time before the glue loses its grip and the base detaches - precisely what happened to our unit.
I feel the little sister could be THE ultimate mod if build quality is addressed. It's small footprint is wonderful. I'd pay as much for this unit as a ProVari if the build quality was at all comparable.
Let's see a high-end version of the Little Sister, maybe "Micro Mom" ;-) Let Micro Mom be constructed of metallic parts, securely fit and soldered and then prepare for world domination.