Merchant sitemap last-modified value: 2026-11-08T12:29:32-05:00. This is separate from the observation date.
Choose the exact option at the merchant
Photos identify the merchant product reference; they do not establish every selectable power, size, color, supply, lens or bundle. Current availability and shipping need a fresh check at the store.
Exact option prices and stock were not captured for this reference. Open the merchant page to inspect the available choices.
Individual creator perspectives, with model and commercial limits below. Load a standard YouTube player only when you choose; YouTube then receives playback requests under its own practices. The product photo is not a video still.
Setup, software, material demonstrations and an internal teardown of the B4 20W.
Named model and power · The regular B4 20W is named. Other powers, MOPA, B4 Pro and B6 are different configurations.
Commercial disclosure & source scope
YouTube marks paid promotion. Description includes a manufacturer referral link; the specific financial arrangement is not confirmed.
Description and primary-source metadata checked 2026-11-09. We have not reviewed the full video or independently verified its results, settings or funding. Exact hardware revision remains unconfirmed.
Product reference photo