: Comprehensive web-based manual with safety and operation details. Google Drive / Docs : Direct PDF link for the WS-887 user manual. B&H Photo Video

After extensive cross-referencing with retail listings and manufacturer support portals, here are the three safest methods to obtain the copy.

Short press to cycle through Bluetooth, FM Radio, AUX, TF Card, and USB modes.

: Varies by model version, typically 300mAh to 820mAh .

Turn the speaker on. It will default to Bluetooth mode and automatically enter pairing mode within 3 seconds, indicated by a flashing blue/red light.