I suggest optimizing the product title to make it more concise and appealing. Here's a revised version: "High-Power Portable Square Subwoofer - Enhanced Audio Experience"

Product information:
Power type: lithium battery
Frequency range: 100HZ-20KHZ
Rated Voltage: 5
Additional functions: card insertion, recording, voice prompt, money collection broadcast
Applicable scenarios: Desktop, fitness, outdoor, home, karaoke, square dance
Rated Power: 40
Specification: Shanshui E50 4-inch speaker standard 4 sections 18650 without microphone, Shanshui E51 6.5-inch speaker Standard 6 sections 18650 with single microphone