The 3D image in the context of my Benq th681 is impeccable.
+ No flicker, etc.
+ Absolutely silent (I could not buzzing, etc. with my 3 ordered glasses hear
+ Reasonable price
+ Charging microUSB
+ Cloth bag for storage while (and Brillenputztuch)
+ Long battery life
- If the glasses are turned on, no lamp lights up permanently, so it is "external" hard to tell if the glasses are now switched on or off. After opening and closing the on-off switch can be on the LED to see if you have just switched the glasses or has turned off.
- The comfort could be better but is ok
- Although there are Micro-USB cable for charging, but no USB power adapter. If you want to invite more of these glasses at the same time one has u. May not be enough USB power supplies available.
In summary, I think the value for money super!