Universal 3D Glasses, DLP-Link Active Shutter Glasses with 80mAh Rechargeable Battery, 50 Hours of Continuous Work, Goggles for Mainstream DLP Projectors

Not horrible, but not fantastic. The build quality is fairly cheap, but so is the price. They worked and for the duration of a full feature length film no less, with seemingly a fair bit of juice left in them. (Maybe a couple movies worth of battery life) As for build quality, the nose piece is made of rubber, they are fairly light weight and they are not uncomfortable to wear, but, as a not small man, they didn't really fit my face that well. A smaller person or a child they would be perfect. The tech seemed to work as intended, but the refresh rate wasn't fantastic. Not sure if that's the glasses or my projector though; As it only accepts dlp, and I only had high quality rf glasses, these were my first test on the new projector. (Projector does 60hz at 4k and 120 at 1080p) Overall would make a great backup pair or second set for guests, etc., but if I were to be buying them as my main pair, I might suggest spending a bit more and getting a nicer set.

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