How to use this glossary
Three rules sit behind every entry. First, ranges are typical across the category - the binding figure for any model comes from that model's datasheet, verified per project. Second, standards are named, not certified by the desk: partner plants hold or pursue them for a given model, and documents are checked per order. Third, a few terms on the market - including abbreviations some sellers print on packaging - have no agreed definition, and those are flagged for a written answer before they reach your box. With that said, the vocabulary splits into four groups: motion, power, protection and trade.
Motion and performance terms
| Term | What it means | Typical range across the category |
|---|---|---|
| Strokes per minute | Half-sweeps per minute of a sonic head | 31,000-40,000 flagship; 20,000-31,000 entry |
| Rotations per minute | Spins per minute of a round rotary head | About 7,000-8,800 |
| Vibrations per minute | Cycles of a U-shaped tray | About 8,000-20,000 |
| Amplitude | Distance the bristle tips travel per sweep | Roughly 1.5-3 mm |
| Mode | A named program of speed or amplitude on the firmware | 2-5 modes per handle |
| Timer and quadrant pacer | Two-minute session clock with 30-second prompts | Standard across families; 45-60 s on U-shaped |
| Pressure sensor | Detects heavy pressing, responds with a pulse or light | Standard on mid and premium tiers |
| Noise | Sound of the assembled handle under load | Motor bay typically kept at or below 55-60 dB |
These eight terms decide the feel of the product, and they are the ones worth testing on samples rather than accepting on paper. Frequency is the easiest to print and the least informative alone - two handles quoted at the same strokes per minute can differ sharply in amplitude, noise and head fit. Amplitude is the harder number to inflate, because the hand detects a large claimed value that is not really delivered as immediate buzz. The timer figures look trivial and are not: prompting style, pulse length and mode switching all live in the same firmware, and inconsistencies there surface as user complaints rather than test failures. Brushing modes explained covers the mode list in depth.
Power, battery and charging terms
| Term | What it means | Typical range across the category |
|---|---|---|
| Li-ion cell | Rechargeable cell type in most handles, cylindrical or pouch | 3.7 V, 800-1,400 mAh |
| AAA / AA cells | Disposable power on entry handles | 2 x AAA typical; about 90 days per set at twice-daily use |
| Runtime | Days of use per charge at two 2-minute sessions daily | 14-30 days rechargeable; 20-60 days travel models |
| Wireless charging | Coil-coupled charging through the handle shell on a dock | Full charge in 12-16 h |
| USB / Type-C charging | Cable charging through a sealed port | Full charge in 4-6 h |
| IPX7 | Immersion rating: 1 m of water for 30 minutes | Industry norm for toothbrush handles |
The battery and waterproofing items carry the most freight consequences, which is why the battery guide and the waterproofing guide each get a full page on this site.
Compliance and transport terms
| Term | What it means |
|---|---|
| IEC/EN 60335-2-52 | Safety standard for oral-hygiene appliances, with IEC 60335-1 as the general part |
| UL 859 | North American route for household electric personal-grooming appliances, via UL or ETL |
| UN 38.3 | Transport tests a lithium cell must pass before it ships |
| IEC 62133-2 | Safety requirements for lithium cells in portable applications |
| FCC Part 15 / CE RED | Radio approvals for Bluetooth models in the US and EU |
| CE (LVD, EMC, RoHS) and REACH | The EU conformity set for the appliance and its materials |
| FDA establishment registration | The US registration layer for toothbrush manufacturing plants; not a product approval |
| HS code | Customs classification; electric toothbrushes commonly declared under 8509.80, manual brushes and some parts near 9603 - confirm with the broker |
None of these are certificates a sourcing desk holds; they are routes a plant completes per model, with documents verified per project. The market-by-market list is in the certifications guide.
Sourcing and trade terms
| Term | What it means | Typical reference |
|---|---|---|
| OEM / private label | Buyer's brand on a plant's existing platform | MOQ 1,000-3,000 pieces plus tooling |
| ODM / catalog mold | Plant's existing model, rebranded | MOQ 500-1,000 pieces |
| Private mold | New tooling cut for the buyer's design | Longer first lead; tooling fee applies |
| Sample lead | Time to first physical units | 7-15 working days public mold; 15-25 days private label |
| Batch lead | Time to mass production | 30-45 days public mold; 35-50 days private label |
| Verification per project | Documents and samples checked for this order, not assumed | The desk's default posture |
These ranges are the usual reference, confirmed in writing for each program - the full schedule is on MOQ and lead time and a program brief starts at the quote form.
Two habits make the trade vocabulary safe to use. The first is pairing every number with its source: a strokes figure with a measurement method, a runtime with the session pattern behind it, a minimum with the mold it assumes. The second is keeping a program glossary of your own - one page that states which definitions your brand uses, attached to every order - so that a replacement contact at the plant inherits the same meanings rather than fresh assumptions. Programs that skip this spend their inspection days arguing about words; programs that keep it spend those days on the product.
Terms that deserve a written definition
A closing category: abbreviations that appear on packaging, listings and order sheets without an agreed industry meaning. VCPA is the common example - it surfaces on some toothbrush packaging and marketplace copy, and different sellers use it to mean different counts, so the desk asks the plant to state in writing exactly what it measures before the term is repeated on a client's box. The same rule covers superlatives and efficacy words: any phrasing that drifts toward treatment, germ claims or approval by an authority is rewritten at the source, because oral-care listings must stay on mechanical facts - a brush helps remove surface stains, paces a session and is sealed to IPX7 - and no further. When a term on a datasheet is not in the tables above, the right move is always the same: ask for its definition and measurement method in writing, and file the answer with the order documents.