Skip past the menu
Spreadsheet · Model MatchIndependent shopping guide

An independent fit guide for device add-ons, not 100buy’s own site

The catalog, shelf by shelf, with the model question asked of each

The catalog behind this site has shelves for clothes, shoes, bags, accessories, fragrance and electronics. Only some involve a model number. Here is every shelf with the question that decides a fit.

Check firstWhether the shelf is model-first or size-first
Usually printedOption list, size chart picture, listing title
Easily confused withScreen inches or wrist sizes standing in for a model

All 16 Spreadsheet categories

Each image links to the corresponding catalog category. Start with these buying checks, then use the specialist notes below. Listing details and agent restrictions must be confirmed for your own order.

From product choice to delivery: the complete guide →

Shelves where the model decides

The catalog this site reads is browsed by category: shelves of product cards from Chinese marketplaces, each card linking to the item. Four shelves hold most of the device add-ons, and on those the model name is the first thing to read.

  • ElectronicsCables, cases, covers and other gadgets. Read the connector and the model in each option.
  • HeadphonesEarbuds and their charging cases. Covers follow the case version, tips follow the bud.
  • WatchesWatches and smartwatch bands. Smart bands follow the connector and case size.
  • BackpacksPacks with laptop sleeves. The sleeve follows the laptop body, not the screen inches.

Searches are often faster than shelves for add-ons: phone cases, watch bands and controllers each open a catalog search.

Shelves where size decides instead

Most of the catalog never asks for a model number. These shelves fit by a size chart, and the questions there are about your body, not your devices.

This site has nothing to add on those shelves beyond one habit: lay a similar garment of your own flat, measure it, and hold those numbers against the seller’s chart. The fit guides for clothes live elsewhere; here they would only dilute the one question this site is for.

Shelves with a measurement in place of a model

A middle group fits by one number rather than a chart or a model. Plain watch straps go by the distance between the lugs. Eyewear goes by frame width. Rings go by size, belts by length, bags by inside dimensions. Fragrance fits nobody in this sense.

  • WatchesPlain straps by lug width; smart bands by connector.
  • EyewearFrame width and temple length.
  • JewelryRing size, chain length.
  • BeltsLength and buckle width.
  • BagsInside dimensions in centimeters.
  • FragranceNo fit question; volume and concentration only.

These are measurements, not models, so the Device fit card does not cover them.

Searching the catalog for an add-on

The home page opens with a catalog search. For add-ons, search the add-on word first (case, band, cover, sleeve, grip), then narrow by reading options, not by stuffing model names into the query. Listings stack many model names into their titles, so a search for one model returns listings for its neighbors too.

Once a listing looks right, the listing titles page explains how to read its option list, and the Device fit card tells you which identifiers to check for that kind of add-on.

If a search returns too little, try the plainer word: cover instead of folio, band instead of strap, film instead of protector.