{"product_id":"rolton-k400-headset-microphone-portable-voice-amplifier-kit","title":"Rolton K400 Headset Mic \u0026 Portable Voice Amplifier Kit","description":"\u003ch2\u003eRolton K400 Wired Headset Microphone \u0026amp; Portable Voice Amplifier Kit\u003c\/h2\u003e\n\u003cp\u003eTake your voice further with the \u003cstrong\u003eRolton K400 Headset Microphone and Portable Voice Amplifier Kit\u003c\/strong\u003e — the all-in-one audio solution designed for teachers, tour guides, presenters, promoters, and meeting hosts. Compact enough to clip onto your belt, yet powerful enough to fill a room, this mini loudspeaker kit delivers clear, amplified sound wherever you go.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePowerful 5W+ Audio Output\u003c\/strong\u003e — Crisp, clear amplification for classrooms, outdoor events, and presentations\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProfessional Omnidirectional Condenser Headset Mic\u003c\/strong\u003e — Wired headset microphone picks up your voice naturally from any angle\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1200mAh Rechargeable Battery\u003c\/strong\u003e — Up to 8 hours of continuous use; detachable 18650 battery for easy replacement\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB Charging Compatible\u003c\/strong\u003e — Charges via any standard 5V USB charger (mobile phone charger recommended); charger current above 500mA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB \u0026amp; TF Card Music Playback\u003c\/strong\u003e — Stream your own audio files directly from a USB drive or TF\/microSD card\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKnob Volume Control\u003c\/strong\u003e — Simple rotary dial for effortless real-time volume adjustment\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-Compact Design\u003c\/strong\u003e — Dimensions: 8.5cm (H) × 8.5cm (W) × 3.4cm (D) | 3.3\" × 3.3\" × 1.2\"\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHands-Free Comfort\u003c\/strong\u003e — Includes a waistband belt clip so you can move freely while speaking\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIdeal For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eClassroom teaching and lectures\u003c\/li\u003e\n  \u003cli\u003eTour guiding and outdoor narration\u003c\/li\u003e\n  \u003cli\u003eBusiness presentations and meetings\u003c\/li\u003e\n  \u003cli\u003ePromotions and trade show demonstrations\u003c\/li\u003e\n  \u003cli\u003eSinging practice and vocal performances\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAyeBeau \/ Rolton K400\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWired\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicrophone Style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHeadset (Over-ear)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransducer Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCondenser Microphone\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePolar Pattern\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOmnidirectional\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAudio Output Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;5W\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1200mAh (Detachable 18650)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 8 hours (4–8 hrs music playback at 50–80% volume)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharging\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard USB 5V (500mA+ recommended)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMedia Playback\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUSB Disk \u0026amp; TF Card\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8.5cm × 8.5cm × 3.4cm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Rolton K400 Loudspeaker Unit\u003c\/li\u003e\n  \u003cli\u003e1 × 1200mAh Rechargeable Battery\u003c\/li\u003e\n  \u003cli\u003e1 × Professional Wired Headset Microphone\u003c\/li\u003e\n  \u003cli\u003e1 × USB Charging Cable\u003c\/li\u003e\n  \u003cli\u003e1 × Waistband Belt Clip\u003c\/li\u003e\n  \u003cli\u003e1 × Instruction Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-32-inch-amoled-smart-watch-bluetooth-call-fitness-tracker-ios-android\"\u003e1.32\" AMOLED Smart Watch – Bluetooth Call, Fitness \u0026amp; Health Tracker\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-44-inch-touch-smartwatch-bluetooth-call-fitness-tracker\"\u003e1.44\" Touch Smartwatch – Bluetooth Calls \u0026amp; Fitness Tracker\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor more information on safe use of audio equipment and hearing health, visit the \u003ca href=\"https:\/\/www.cdc.gov\/nceh\/hearing_loss\/index.html\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eCDC's Hearing Loss Resource Center\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the Rolton K400 voice amplifier kit best used for?\u003c\/h4\u003e\n\u003cp\u003eA: The Rolton K400 wired headset microphone and portable voice amplifier kit is ideal for classroom teaching, tour guiding, business presentations, promotional events, and meetings. Its compact, belt-clip design allows hands-free, mobile use so you can engage your audience without being tied to a podium.\u003c\/p\u003e\n\u003ch4\u003eQ: How long does the battery last on the Rolton K400 loudspeaker?\u003c\/h4\u003e\n\u003cp\u003eA: The built-in detachable 1200mAh 18650 battery provides up to 8 hours of use. When playing music at 50–80% volume, expect approximately 4–8 hours of continuous playback. The unit charges via any standard 5V USB cable, such as a smartphone charger (500mA or higher current recommended).\u003c\/p\u003e\n\u003ch4\u003eQ: Can the Rolton K400 play music from a USB drive or memory card?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The Rolton K400 supports both USB disk and TF (microSD) card playback, allowing you to play background music or pre-recorded audio directly through the built-in speaker — great for presentations, fitness classes, or guided tours.\u003c\/p\u003e\n\u003ch4\u003eQ: Is the headset microphone included in the kit?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. The kit comes complete with a professional wired omnidirectional condenser headset microphone, a USB charging cable, a waistband belt clip, and an instruction manual — everything you need right out of the box.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the Rolton K400 voice amplifier kit best used for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The Rolton K400 wired headset microphone and portable voice amplifier kit is ideal for classroom teaching, tour guiding, business presentations, promotional events, and meetings. 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The kit comes complete with a professional wired omnidirectional condenser headset microphone, a USB charging cable, a waistband belt clip, and an instruction manual — everything you need right out of the box.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/oasis-select.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Gadgets \u0026 Audio\", \"item\": \"https:\/\/oasis-select.com\/collections\/gadgets-audio\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Rolton K400 Headset Mic \u0026 Portable Voice Amplifier Kit\", \"item\": \"https:\/\/oasis-select.com\/products\/rolton-k400-headset-microphone-portable-voice-amplifier-kit\"}]}\u003c\/script\u003e","brand":"Oasis Select","offers":[{"title":"Rose","offer_id":47751415267433,"sku":"14:496#Rose","price":46.4,"currency_code":"USD","in_stock":true},{"title":"Black","offer_id":47751415300201,"sku":"14:175#Black","price":46.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/7931\/3257\/files\/Sa16d3b89f5954e449d71638ceae16458g.webp?v=1783189443","url":"https:\/\/oasis-select.com\/products\/rolton-k400-headset-microphone-portable-voice-amplifier-kit","provider":"Oasis Select","version":"1.0","type":"link"}