info Edifier

Status Blue LED on for 3s

Indicates charging or low battery level.

? What Causes This

Battery needs to be charged or current battery status is low.

What This Means

Plug in the charger and wait until LED turns green (fully charged).

Source: page 2 of the official manual

From the manual

Manual page 2 — Edifier error Blue LED on for 3s

This error code appears in:

Edifier WH950NB Bk Wireless Noise Cancellation Over Ear Headphones