Eartec UL4S Ultralite Full Duplex Wireless Headset for 4 Users

Our review of the Eartec UL4S Ultralite kit finds it best suited for small production crews and teams that need clear, hands-free group communication without complex setup. The single biggest reason to buy is simple: this bundle delivers true full-duplex, simultaneous talk capability for four users on a reliable 1.9 GHz channel with a long line-of-sight range, making walkie-style delays and push-to-talk interruptions largely irrelevant for video shoots, stage management, or small vessel operations.

Key Features

• Full-duplex wireless: Allows four users to speak and be heard at the same time, which keeps collaboration fluid during live shoots or operations.
• 1.9 GHz operation: Uses a dedicated frequency band to reduce interference from other consumer wireless devices in busy environments.
• Long wireless range: Offers up to 1,000 ft line-of-sight range so team members can spread out on larger sets or outdoor sites while staying connected.
• Rechargeable battery system: The bundle includes eight lithium batteries and a ten-bay multi-port charger so all headsets can be topped up between jobs.
• Noise-cancelling microphone: Improves voice clarity in noisy environments and mutes automatically when the boom is pivoted up for quick privacy.
• Portable kit: Comes with a softside case and cleaning wipes so the set stays organized and maintained between uses.

Who It's For

The UL4S is ideal for small production teams, wedding videographers, stage crews, and drone or boat operators who need dependable, hands-free group communication across a moderate outdoor or indoor area. Its full-duplex design is especially useful when multiple people must coordinate simultaneously, such as camera operators and directors working in tight timelines.

Those who need all-day battery life without swapping cells or who require in-ear stereo audio monitoring should look elsewhere; battery performance can vary in real-world use and the headsets are single-ear designs focused on voice communication rather than immersive listening.

Pros & Cons

Pros

• True simultaneous communication for four users keeps conversations natural and immediate.
• Long 1,000 ft LOS range handles larger performance and outdoor spaces well.
• Includes eight batteries and a ten-bay charger so the set is ready for multi-shift use.
• Noise-cancelling mics and pivot-to-mute improve clarity and quick privacy control.

Cons

• Battery life varies by report; some users see longer runtimes while others report charging problems, so inspect charging and cells before critical jobs.
• Single-ear design may not suit users wanting full stereo monitoring or full immersion.

Specifications

Our Verdict

The Eartec UL4S Ultralite bundle is a pragmatic choice for crews that need reliable, simultaneous voice communication without fuss. It bundles a full set of batteries and a multi-port charger so teams can stay active between takes, and its long range and noise-cancelling mics make it good value for production and field work. Prospective buyers should check battery conditioning and charging behavior before relying on it for critical all-day events.

Frequently Asked Questions

Can all four headsets talk at once?
Yes. The system is full-duplex, enabling simultaneous conversation among the four users.

How long do the batteries last?
Typical talk time is up to about 6 hours per charge, though some users report variation in real-world runtime.

Does the microphone mute when not in use?
Yes. The boom microphone mutes automatically when pivoted up for quick privacy and noise control.