A:Answer I have both types of glasses. Traditional glasses (Model: SSG-5150GB/ZA) are more light weight, but use 'button cell' batteries that cost about a dollar a piece. Rechargeable glasses (Model: SSG-3570CR/ZA) plug in via USB on your tv to save on battery cost (provided in the box to sync to tv). I think most TV's come with the battery operated glasses as they were about $20 when I bought another pair compared to the $50 each for the rechargeable glasses. I can't tell a difference in video quality between the two types, but the rechargeable glasses are more bulky and harder to wear around the ear. Hope this helps.