Too much rear edge reflection, fragile battery door, and fit is too snug for adult heads above ears.
Other than being light, these 3D glasses fit very tightly over an adult size head & ears. The battery concept is good, but changing the battery with the fragile hinged door is awkward. The biggest issue to save other potential buyers headaches (literally) is the front curve of the lenses is so flat that reflections of everything in the room in the far left & right 1/3 of the lenses is VERY distracting, even in a dark room. They also don’t sit comfortably over glasses. I was hopeful with these, but the rear reflection issue is a deal breaker. The slightly older rechargeables are much more comfortable as well as any Panasonic glasses. Hope this helps 3D film lovers.