from the eflite website:

“The new mSR is an ultra-micro helicopter, but it is a Single Rotor heli that brings a new level of performance to these very small helicopters. It is basically the same size as the common mCX heli, but the new mSR is very different in every other aspect especially in terms of flight performance. The mSR will provide an excellent stepping stone to full high-performance helicopters for people graduating from a co-axial dual rotor heli. Most people with some mCX or CX2/3 experience will be able fly the mSR and develop their indoor flying skills to a much higher degree. The new level of performance is going to surprise you in a big way. A single rotor with a true powered tail rotor results in flight performance on a level with larger helicopters”

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Unlike most model helicopters of it’s size, the MSR (Micro Single Rotor) has a single main rotor blade, & a tail rotor to counteract torque. This means it can be much faster than the typical coax in this size. But, from some innovative offsets of the flybar & a tilted main shaft, it’s nearly as stable as a coax to make it forgiving to beginners.

Available as a RTF (Ready to Fly) complete with 2 batteries, 4 port charger, and a simple but effective 2.4GHZ DSM2 transmitter, or a BNF (Bind-n-fly) model that includes everything but the transmitter, the MSR can be the perfect entry into helicopters, or a fun indoor heli to use in the winter months for the expert flyer.

Using the Spektrum DSM2 technology, you can use any 4 channel or better DSM2 transmitter from Spektrum or JR, or another brand with a DSM2 module, so the radio you use on your larger models can also be used on your smallest!

Although, the MSR is incredibly durable, there are some parts that are more prone to breaking & thus you might want some spares on hand. The tail motor if hit in a crash can pop the endcap off. Once that’s done, it’s near impossible to replace the cap, so you’ll need a new Tail Boom Assembly w/Tail Motor/Rotor/Mount: BMSR. Another common part are the Main Blade Grips with/Hardware: BMSR.

Did I mention fast? Yes the MSR is much faster than any coax helicopter out of the box. But E-flite also added a turbo feature. Just switch the ball links on the swashplate to the outer ones & the controls become that much faster. This lets you get even more speed out of the MSR & is a welcome addition for those calm days, when you can take the MSR outdoors. That’s right you can fly outside with the MSR… just make sure the wind is no more than about 5 mph.

If you’re just thinking about getting into model helicopters or you’re a seasoned veteran looking for something to use in your living room, the MSR is for you.