A plain cable is enough if you only care about charging. A charging case becomes worth it when you care about the entire routine: where the glasses live, how they stay protected, and whether they are ready to go again when you pick them up next.
When a cable is enough
- You mostly use the glasses at one desk
- You already have a safe place to store them
- You do not mind plugging and unplugging every time
When a charging case is the better answer
- You want storage and charging in one accessory
- You take the glasses in and out of a bag regularly
- You want the glasses to have a predictable home base instead of floating around with a loose cable
The practical answer
If your bigger issue is runtime while wearing the glasses, buy a power accessory first. If your bigger issue is clean storage and repeatable charging between uses, buy SGG VAULT Charge first. The right first accessory depends on which routine feels more annoying right now.