{"product_id":"square-audio-high-power-portable-subwoofer-4-inch-or-6-5-inch-speaker-with-lithium-battery-40w-rated-power-100hz-20khz-frequency-range-for-desktop-fitness-outdoor-home-karaoke-and-square-dance","title":"Square Audio High-power Portable Subwoofer 4-inch or 6.5-inch Speaker with Lithium Battery, 40W Rated Power, 100HZ-20KHZ Frequency Range for Desktop Fitness Outdoor Home Karaoke and Square Dance","description":"\u003ch1\u003ePortable 40W Subwoofer Speaker with Lithium Battery and 100HZ-20KHZ Range\u003c\/h1\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Portable 40W subwoofer speaker with lithium battery, 4-inch or 6.5-inch size, for karaoke and square dance\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US10\/7648\/2025-11-17\/original-image\/2403210139250328800.webp\"\u003e\u003c\/div\u003eThis portable subwoofer speaker is built for buyers who want one audio unit that can be used in different places rather than being tied to a single room. It is listed for desktop, fitness, outdoor, home, karaoke and square dance scenarios, so it covers both everyday listening and organised group activities. The 40W rated power and 100HZ-20KHZ frequency range give a clear indication of its intended output, while the lithium battery power type and 5V rated voltage allow it to be used without a permanent mains connection. Additional functions include card insertion, recording, voice prompt and money collection broadcast. Two specifications are available: the Shanshui E50 4-inch speaker standard with 4 sections 18650 and no microphone, and the Shanshui E51 6.5-inch speaker standard with 6 sections 18650 and a single microphone. Each package contains one speaker.\u003ch2\u003eFeatures and Construction\u003c\/h2\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Portable 40W subwoofer speaker with lithium battery, 4-inch or 6.5-inch size, for karaoke and square dance\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US10\/7648\/2025-11-17\/original-image\/2403210139250329400.webp\"\u003e\u003c\/div\u003eThis section covers the practical build details that affect how the speaker is powered and used. The source provides information on battery type, rated voltage, rated power, frequency range and available functions, but it does not give materials for the outer casing or driver construction.\u003ch3\u003eMaterial and Build\u003c\/h3\u003eThe speaker uses a lithium battery as its power type and has a rated voltage of 5. The 18650 cells listed in the specifications are part of the battery arrangement: the 4-inch version is supplied with 4 sections, while the 6.5-inch version is supplied with 6 sections. The additional functions include card insertion, recording, voice prompt and money collection broadcast. No casing material, grille material or driver material is stated in the source text.\u003ch3\u003eSize and Practical Fit\u003c\/h3\u003eTwo size options are available. The Shanshui E50 is a 4-inch speaker standard supplied with 4 sections 18650 and no microphone. The Shanshui E51 is a 6.5-inch speaker standard supplied with 6 sections 18650 and a single microphone. These sizes affect the physical footprint and the choice of microphone inclusion, but the source does not provide exact dimensions, weight or carry strap details. Buyers who need a microphone should select the 6.5-inch option.\u003ch2\u003eUses and Placement\u003c\/h2\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Portable 40W subwoofer speaker with lithium battery, 4-inch or 6.5-inch size, for karaoke and square dance\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US10\/7648\/2025-11-17\/original-image\/2403210139260320200.webp\"\u003e\u003c\/div\u003eThe listed scenarios show that this speaker is intended for flexible placement rather than a fixed installation. It can be used on a desktop, taken outdoors, used at home, or used for karaoke and square dance. This section explains how those settings relate to the stated functions and power arrangement.\u003ch3\u003eEvent or Professional Use\u003c\/h3\u003eFor karaoke and square dance, the 6.5-inch Shanshui E51 with single microphone is the relevant specification because it includes a microphone. The 40W rated power and 100HZ-20KHZ frequency range are the stated working figures. The money collection broadcast function is also listed, which may suit situations where short spoken announcements or prompts are needed. No coverage distance, maximum audience size or sound pressure level is stated.\u003ch3\u003eEveryday Home Use\u003c\/h3\u003eFor desktop, home and fitness use, the speaker can be powered by its lithium battery and charged at the stated 5V rated voltage. Card insertion allows playback from a memory card, and the recording function can be used where a recording feature is required. The 4-inch Shanshui E50 version is supplied without a microphone, which suits listening and playback rather than amplified speech. No remote control, app control or Bluetooth version is stated.\u003ch2\u003eBenefits and Buying Value\u003c\/h2\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Portable 40W subwoofer speaker with lithium battery, 4-inch or 6.5-inch size, for karaoke and square dance\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US10\/7648\/2025-11-17\/original-image\/2403210139260320900.webp\"\u003e\u003c\/div\u003eThis section focuses on the practical reasons to choose this speaker and the limits of the available information. The source does not include price, warranty period, battery run time or water resistance, so those points cannot be confirmed here.\u003ch3\u003eReuse and Low Maintenance\u003c\/h3\u003eThe rechargeable lithium battery arrangement allows the speaker to be used away from a mains socket, and the stated 5V rated voltage indicates the charging input level. The card insertion function means playback does not depend solely on a connected device. The recording, voice prompt and money collection broadcast functions add further uses beyond music playback. Because the source does not state battery life, charging time, water resistance or replacement part details, no claims can be made about those aspects.\u003ch3\u003eWhy Choose This Product\u003c\/h3\u003eChoose the Shanshui E50 4-inch version if you need a speaker with 4 sections 18650 and no microphone. Choose the Shanshui E51 6.5-inch version if you need a larger speaker size with 6 sections 18650 and a single microphone. Both versions share the 40W rated power, 100HZ-20KHZ frequency range, 5V rated voltage, lithium battery power type and additional functions including card insertion, recording, voice prompt and money collection broadcast. Each package contains one speaker, and no other accessories are stated.\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Portable 40W subwoofer speaker with lithium battery, 4-inch or 6.5-inch size, for karaoke and square dance\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US10\/7648\/2025-11-17\/original-image\/2403210139260321600.webp\"\u003e\u003c\/div\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Portable 40W subwoofer speaker with lithium battery, 4-inch or 6.5-inch size, for karaoke and square dance\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US10\/7648\/2025-11-17\/original-image\/3da2e536-bbe7-48af-a47e-8465032c70c4.webp\"\u003e\u003c\/div\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Portable 40W subwoofer speaker with lithium battery, 4-inch or 6.5-inch size, for karaoke and square dance\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US10\/7648\/2025-11-17\/original-image\/4e8db31d-9292-42ac-a88b-0bfc3b3596b5_fine.webp\"\u003e\u003c\/div\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Portable 40W subwoofer speaker with lithium battery, 4-inch or 6.5-inch size, for karaoke and square dance\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US10\/7648\/2025-11-17\/original-image\/5fe94f82-b022-493b-8fc5-bd304cef546b.webp\"\u003e\u003c\/div\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Portable 40W subwoofer speaker with lithium battery, 4-inch or 6.5-inch size, for karaoke and square dance\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US10\/7648\/2025-11-17\/original-image\/b8ae1bc4-7fc5-4c90-8bc4-6a9e13c45269.webp\"\u003e\u003c\/div\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cimg alt=\"Portable 40W subwoofer speaker with lithium battery, 4-inch or 6.5-inch size, for karaoke and square dance\" src=\"https:\/\/images.seoo.uk\/src\/products\/shopify_export\/US10\/7648\/2025-11-17\/original-image\/c7dccc16-372b-4cb7-afff-34c63829830f_56df199e-8e0b-4812-b4fd-52d76a3b281c.webp\"\u003e\u003c\/div\u003e","brand":"bdqtfk-es","offers":[{"title":"6.5Inches","offer_id":55466092593493,"sku":"CJYD199271202BY","price":95.88,"currency_code":"GBP","in_stock":true},{"title":"4Inches","offer_id":55466092626261,"sku":"CJYD199271201AZ","price":69.88,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1057\/4154\/9909\/files\/4e8db31d-9292-42ac-a88b-0bfc3b3596b5_fine.webp?v=1792607068","url":"https:\/\/aerotouch.fiorevale.com\/products\/square-audio-high-power-portable-subwoofer-4-inch-or-6-5-inch-speaker-with-lithium-battery-40w-rated-power-100hz-20khz-frequency-range-for-desktop-fitness-outdoor-home-karaoke-and-square-dance","provider":"AeroTouch.uk","version":"1.0","type":"link"}