Saramonic WiTalk9 WT4S 4-Person Full-Duplex 1.9GHz Wireless Headset Intercom System w/ carry case

Saramonic WiTalk9 WT4S 4-Person Full-Duplex Wireless Headset Intercom System — 1.9 GHz, Up to 500 m Range

The Saramonic WiTalk9 WT4S is a 4-person full-duplex wireless intercom system designed for live-event production and broadcast teams. It operates on the Digital 1.9 GHz band, delivers full-duplex, hands-free communication, and ships complete with single-ear headsets, batteries, a 10-slot charging bay, and a carry case.

Key features and what they mean for your team

• Production crew communication for 4 people — The system includes one master single-ear headset and three single-ear remote headsets to serve a small crew out of the box.
• True-wireless master and remote headsets — Headsets connect wirelessly without a separate hub or bodypack, enabling a compact, simple setup.
• Full-duplex communication up to 500 m — Team members can speak and listen simultaneously at a line-of-sight range up to 500 m, which supports a range of broadcast and event applications.
• Adjustable boom with auto-mute when stowed — The microphone boom is adjustable and mutes automatically when flipped up, helping avoid accidental transmission.
• On-ear foam and over-ear cooling-gel earpads included — The system includes two earpad options to suit different comfort preferences during long shifts.
• Includes rechargeable batteries and a 10-bay charging station — The kit comes ready to use with batteries and a charging bay that stores and charges multiple batteries at once.
• Expandable system without a hub — You can expand the system: wired cascading supports up to 30 transceivers per band, while wireless protocols allow up to 9 users.
• iOS and Android app control — Use the Saramonic Master app to group and name users, monitor battery status, and manage system settings in real time.

System contents — what’s included

• Saramonic WiTalk9-4S 4-person full-duplex wireless intercom system (single-ear headsets, 1.9 GHz)
• WiTalk9-SMH single-ear master headset
• 3 × WiTalk9-SMH single-ear remote headsets
• 8 × WiTalk9-BP rechargeable batteries
• WiTalk-CB10 10-slot charging bay
• Power supply with international adapters
• 4 × on-ear foam earpads
• 4 × over-ear cooling-gel earpads
• 4 × headset temple pads
• 4 × foam windscreens
• 3 × number sticker sheet
• 4 × drawstring pouch
• Carrying case
• Limited 2-year manufacturer warranty

Please note: headset stands are not included.

How the WiTalk9 WT4S works in real workflows

Set up is straightforward because the system does not require a bulky hub or external bodypacks. Therefore, you can deploy the system quickly for concerts, theater, live broadcasts, and other event productions. Because communication is full-duplex, team members can talk and listen at the same time, which speeds coordination on set and during live events.

Additionally, connect remotely when needed: the headsets support wired TRRS connections and Bluetooth, so you can link team members via cloud meeting apps such as Zoom, Microsoft Teams, Skype, or a phone call. This flexibility lets on-site crew work seamlessly with remote staff or producers.

Audio, microphones and clarity

The system uses ClearTalk technology with a 360° 3-microphone array and noise cancellation to preserve intelligibility in noisy environments. Dual internal antennas and proprietary encryption ensure stable, secure communication even in spaces with heavy RF interference. The headset microphone is an electret condenser type with an omnidirectional pickup pattern and noise-cancelling capability, and the boom is interchangeable for left or right-side use.

Comfort, durability and outdoor use

Headsets are built to be lightweight and comfortable for extended wear. Each headset includes a soft headband and temple pads, plus two earpad styles to suit personal preference. The headsets offer IPX5 water resistance and Level 3 wind protection, making them suitable for demanding outdoor environments where weather and wind are factors.

Battery, charging and runtime

The system ships with rechargeable batteries and a 10-slot charging bay. According to the included information, remote headsets run up to 15 hours on a single charge and the master headset can run up to 9 hours on a single charge. Headset batteries are removable for quick swaps, and you can recharge via the included charging bay or use the USB-C port on the headsets to recharge on the fly in approximately 3.5 hours.

Expandability and system management

You can expand the WiTalk9 system without adding a hub. Wired cascading supports up to 30 transceivers per band, while wireless protocols allow expanding to up to 9 users wirelessly. Use the Saramonic Master app on iOS or Android to group and name team members, monitor battery levels, view user status, mute users, enable 1-on-1 conversations, and set broadcast-priority messages.

Specifications

FAQ

• Question: Can I expand this system beyond the four included headsets?
  Answer: Yes. The WiTalk9 series supports wired cascading up to 30 transceivers per band and wireless expansion up to 9 users, so you can grow the system to fit larger crews without adding a hub.
• Question: How do I connect remote participants who are not on site?
  Answer: Use the headset’s TRRS port or Bluetooth to connect to a smartphone, tablet, or computer. Then run a cloud meeting app such as Zoom, Teams, or Skype to include remote team members in real time.
• Question: What are the battery runtimes and charging options?
  Answer: The system includes rechargeable LiPo batteries. Remote headsets can run up to 15 hours and the master headset up to 9 hours on the included batteries; the specifications also list headset runtime as 10 / 15 hours. Recharge the batteries in the included 10-slot charging bay or use the headset USB-C port to recharge in about 3.5 hours.
• Question: Are these headsets suitable for outdoor events with wind and light rain?
  Answer: Yes. The headsets feature IPX5 water resistance and Level 3 wind protection, and they include noise-cancelling microphones that help maintain clear speech in challenging outdoor environments.