{"product_id":"eartec-ul4s-ultralite-hd-4-person-full-duplex-intercom-clear-team","title":"EARTEC UL4S Ultralite-HD 4-Person Full Duplex Intercom - Clear Team","description":"\u003cp\u003eOur review of the EARTEC UL4S Ultralite-HD finds it to be a focused team communication system best suited for small crews who need reliable, hands-free voice coordination. The single biggest reason to buy is its \u003cstrong\u003efull duplex\u003c\/strong\u003e capability on a 1.9 GHz band that lets four people speak and listen simultaneously without push-to-talk delays, making it practical for video and stage production, boat operators, and small construction teams who prioritize clear, immediate coordination.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded kit:\u003c\/strong\u003e Comes with one main ULSM headset, three ULSR remotes, four rechargeable lithium batteries, a 10-bay multi-port charger and a softside carrying case for organized portability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull duplex hands-free:\u003c\/strong\u003e Operates on 1.9 GHz to avoid common interference and allows simultaneous two-way conversation for all connected users.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpandable system:\u003c\/strong\u003e Ships configured for four users but can be expanded to include a fifth headset for slightly larger crews.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong range:\u003c\/strong\u003e Offers up to 1,000 ft line-of-sight range, useful for outdoor events, UTV or boat operations where team members can be spread out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNoise-cancelling clarity:\u003c\/strong\u003e The microphones reduce background noise and mute automatically when pivoted up to prevent unwanted transmission.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll-day use design:\u003c\/strong\u003e Headsets pivot for left or right ear use and provide up to about six hours of talk time per charge for typical shift lengths.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe UL4S is aimed at small production crews, event staff, drone and boat operators, and other teams who need clear, simultaneous voice communication without constant hand signals or radios. Its single-ear design keeps one ear open to ambient sound, which is valuable on stages, sets and in outdoor work.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include users who require all-day continuous operation beyond six hours without swapping batteries, or teams needing integrated wired intercom or headset models with two-ear noise isolation for very loud environments. Large productions that need more than five users will want a different scalable system.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTrue hands-free \u003cstrong\u003efull duplex\u003c\/strong\u003e communication for natural conversation between crew members.\u003c\/li\u003e\n\u003cli\u003eComplete kit with multi-port charger and carrying case simplifies deployment and storage.\u003c\/li\u003e\n\u003cli\u003eGood audio clarity from noise-cancelling microphones, helpful in moderate background noise.\u003c\/li\u003e\n\u003cli\u003ePortable range of up to 1,000 ft LOS for flexible placement of team members outdoors.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBattery life is generally adequate but customers report mixed experiences and occasional charger problems, so plan for spare batteries or checks before use.\u003c\/li\u003e\n\u003cli\u003eSingle-ear design may not suit users who need full ear isolation in very loud environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeadset configuration\u003c\/td\u003e\n\u003ctd\u003e1 main ULSM + 3 ULSR single-ear remotes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded accessories\u003c\/td\u003e\n\u003ctd\u003e4 rechargeable lithium batteries, 10-bay charger, softside carrying case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency\u003c\/td\u003e\n\u003ctd\u003e1.9 GHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating range\u003c\/td\u003e\n\u003ctd\u003eUp to 1,000 ft line-of-sight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTalk time\u003c\/td\u003e\n\u003ctd\u003eUp to 6 hours per charge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExpandability\u003c\/td\u003e\n\u003ctd\u003eSystem expandable up to 5 users\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe EARTEC UL4S Ultralite-HD is a sensible choice for small teams that need immediate, hands-free voice coordination and clear audio in moderately noisy environments. It delivers practical range, a complete kit for quick setup, and the conversational convenience of \u003cstrong\u003efull duplex\u003c\/strong\u003e operation, though buyers should verify battery and charger performance for their workflow.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan the system support more than four users?\u003c\/strong\u003e\u003cbr\u003eYes, the system can be expanded to support up to five users by adding an additional compatible headset unit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow long do the batteries last on a charge?\u003c\/strong\u003e\u003cbr\u003eBatteries provide up to about six hours of talk time on a single charge under typical use, so plan for rotation or spares for longer shifts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the microphone good in noisy environments?\u003c\/strong\u003e\u003cbr\u003eThe headsets use a noise-cancelling microphone that improves clarity in moderate background noise and mutes when pivoted upward to avoid accidental transmission.\u003c\/p\u003e","brand":"EARTEC","offers":[{"title":"Default Title","offer_id":48610747252955,"sku":"B01LOKUQE4","price":735.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61eEpotQRAL._AC_SL1500.jpg?v=1778587756","url":"https:\/\/gearmusthave.com\/products\/eartec-ul4s-ultralite-hd-4-person-full-duplex-intercom-clear-team","provider":"GearMustHave","version":"1.0","type":"link"}