The term "ultra deduction" does not appear to be an official feature or specification of the Acefast K3 Ultra portable wireless speaker; it might be a mistranslation or a misinterpretation of one of its features. The product's actual features emphasize powerful sound and portability. 

Key Features of the Acefast K3 Ultra

The Acefast K3 Ultra is a portable wireless speaker known for its high peak power and robust design. 

Powerful Audio Output: The speaker offers 60W of continuous power, with a peak power of up to 120W, providing punchy, room-filling sound. It features a 3-driver system (one mid-low range speaker and two high-frequency speakers) and two passive radiators for enhanced bass.

DSP Processor: It includes a Digital Signal Processing (DSP) processor, which helps deliver rich sound and heavy bass while ensuring clear audio details. This is likely related to the "deduction" in the user's query, as DSP technology involves digitally processing the audio signal to enhance quality.

Connectivity: It uses Bluetooth 5.4 for a stable connection and supports TWS (True Wireless Stereo) interconnection, allowing two K3 Ultra speakers to be paired for a 360° surround stereo sound effect.

Durability and Portability: The speaker has an IPX6 waterproof rating, making it suitable for outdoor use. It includes a leather-textured carrying strap handle and a built-in microphone for hands-free calls.

Long Battery Life: It is equipped with a 4500mAh (11.1V) battery that provides approximately 19 hours of music time (at 50% volume) on a single charge.

Multiple Playback Modes: In addition to Bluetooth, it supports playback via USB flash drive, TF card, and AUX inputs. It also features RGB lighting and three EQ modes (Music, Movie, Outdoor) to customize the ambiance and sound profile.