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Description
Hollyland SOLIDCOM C1-4S Full-Duplex Wireless DECT Intercom System With 4 Headsets (1.9 GHz)The Hollyland Solidcom C1 4S is a full duplex wireless DECT intercom system engineered to provide clear audio and all day wearing comfort in a true wireless design with no bodypack or hub required. This configuration includes 4 single sided headsets, 1 master and 3 remote units, along with rechargeable batteries, a charger, and accessories. The system uses DECT 6. 0 encryption and dual antenna technology to ensure secure and reliable transmission at a
The Hollyland Solidcom C1-4S is a full-duplex wireless DECT intercom system engineered to provide clear audio and all-day wearing comfort in a true-wireless design with no bodypack or hub required. This configuration includes 4 single-sided headsets, 1 master and 3 remote units, along with rechargeable batteries, a charger, and accessories. The system uses DECT 6.0 encryption and dual antenna technology to ensure secure and reliable transmission at a range of up to 1000'—making it well suited for a variety of applications including film production, concerts, and public events.
True-Wireless Self-Contained Headset for 2-Way Communication
With no beltpack or base station, the C1 offers a highly portable and hands-free coordinating experience for media production teams and others looking for real-time, non-blocking voice communication in socially distanced working scenarios at distances up to 1000'.
Wide Frequency Response for Precise Coordination
The Solidcom C1 offers a 150 Hz to 7 kHz frequency response and premium acoustic echo cancellation (AEC) to ensure clear intelligible audio for effective teamwork. The directional mic captures the speaker's voice precisely while minimizing unwanted background sound, making conversations easier even in noisy environments.
Ready to Use Right Out of the Box
The headsets pair up automatically, and tactile volume buttons allow for fast adjustments—making the system easy to operate. The microphone boom on each headset rotates 360°, allowing for left or right orientation. Rotating the boom arm up or down conveniently mutes the mic when not in use. An LED indicates the system is working and warns you when the battery is low.
Enhanced Stability and Security with DECT 6.0
Built on the powerful DECT 6.0 platform and featuring a dual-antenna diversity scheme, the Solidcom C1 can prevent people outside the system from hearing your conversation with encryption technology and provides stable and reliable transmission with doubled user capacity on the communication channel.
Rechargeable Batteries + Charging Station
Each headset runs on a single rechargeable battery. The amount of battery time in the master headset depends on the number of following headsets in use; with 5 remote headsets connected, the battery will last for approximately 5 hours; with 3 following headsets in use, the battery life is 6 hours. Each remote headset will last for up to 10 hours on a single battery charge. Each battery fully recharges in 2.5 hours and a battery charging station, USB cable, and AC adapter are included.
Expandable System
With its recent firmware upgrade, the Solidcom C1 system allows you to link up to 7 remote headsets to the master headset without using a hub. The C1 HUB base (available separately) allows up to 8 headsets to be used at once. Up to 3 hubs can be cascaded with a standard RJ45 cable, allowing for up to 24 headsets to be used at the same time. The HUB also offers additional features including A/B grouping and an announce key that mutes all the headsets for emergency messages from the HUB base.
Specifications
System
| Number of Included Headsets | 4 x Single-Sided Headset |
| Users per System | 4 |
Wireless Connectivity
| Wireless Technology | Digital DECT (1.9 GHz) |
| DECT Standard | 6.0 |
| Operating Range | 1000' / 304.8 m |
| Wireless Modulation | Analog: GFSK |
| Duplex Mode | Echo Cancellation |
| Approximate RF Sensitivity | -90 dBm |
| Encryption | Proprietary |
Headphone
| Earpiece Design | On-Ear (Supra-Aural) / Over-Ear (Circumaural) |
| Earpiece Connection / Wearing Style | Headband |
| Number of Earpieces | Single Earpiece (Left or Right Side) |
| Sound Field | Mono |
| Controls/Microphone Location | Controls: Adjustable Boom, Earpiece (Side Unspecified) |
| Frequency Response | 150 Hz to 7 kHz |
| Total Harmonic Distortion (THD) | 1% |
| Maximum Sound Pressure Level (SPL) | 115 dB |
| SNR | Headphones: >55 dB |
Microphone
| Type | Electret Condenser |
| Mic Boom Location | Interchangeable (Left or Right Side) |
| Pickup Pattern | Cardioid (Unidirectional) |
| Maximum SPL | 115 dB |
| Distortion | <1% |
Wired Connectivity
| Audio Connector to Source | None |
Battery
| Battery Type | Headset: 1 x 26650 |
| Battery Chemistry | Headset: Lithium-Ion |
| Capacity (mAh) | 700 mAh |
| Runtime | Headset: 10 Hours |
| Recharge Time | 2.5 Hours |
Environmental
| Operating Temperature | 32 to 113°F / 0 to 45°C |
| Storage Temperature | -4 to 140°F / -20 to 60°C |
Physical
| Environmental Protection | None |
Packaging Info
| Package Weight | 5.88 lb |
| Box Dimensions (LxWxH) | 15.6 x 9.1 x 7.9" |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 736 reviews
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Product Reviews
★★★★★ 5
Classic and functional
Color: Stainless Mesh/ Blue Dial
High quality and affordable watch. Love the mesh band. It’s a classic, functional everyday look. Easy to adjust, and never runs out of power. Perfect for men who have smaller wrists. Bought for my husbands birthday, and he loves it.
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Reviewed in the United States on July 31, 2025
★★★★★ 5
Everything as expected
Color: Stainless Mesh/ Blue Dial
It's a nice watch added to the collection, looks really good on hand, the metallic mesh band is very elegant and also customizable, so it will fit perfectly on your hand.
It seems that it had a bit of charge out of the box, but I'll leave it under a direct (under 20cm distance) LED desk lamp to recharge overnight, I'll also leave them under sunlight around the windows whenever possible (at least for the first week or so), it's stated in the online manual that it will need ~45 hours to fully charge on a cloudy day under the sunlight.
By the way, it would've been nice to have the manual in the box, but at least it's easy to find the (generic) manual in their website.
The fluorescence of the hands and hour dots are really bright and mine had nice bluish color.
Of the features, the chronograph works perfectly as expected, the manual also states to set the time 5 minutes ahead of the real time then slowly rewind back to the current time whenever setting the time, for the time keeping to be more accurate because of some gear movements inside.
To be honest, it would be great to see Citizen use scratch resistant sapphire instead of some mineral as the face protective layer, as they do for other high-end models, the technology is not new and I think it wouldn't make it that much more expensive, I hope this one will be resistant enough🤞🏻
Overall, this is the first day I received the watch, I'm quite happy with my purchase, it's nice knowing you won't need to replace the battery anytime soon 😛
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Reviewed in the United States on December 12, 2023
★★★★★ 5
Great World Time Watch!
Color: Stainless/ Black Dial
The usual quality Citizen construction, Eco-Drive, and a very handy world time bezel. FIVE STARS!
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Reviewed in the United States on February 8, 2026
★★★★★ 4
Great watch for the money
Color: Stainless Mesh/ Blue Dial
Looks great. I swapped out the band for a leather strap. Nice watch, well designed. My other eco drive has been going strong for 15 years or so without a hitch. So I have high expectations for this one.
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Reviewed in the United States on January 9, 2024
★★★★★ 5
Great Gift
Color: Stainless Mesh/ Blue Dial
It was a gift for my Dad but he loved it! Very worth it
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Reviewed in the United States on April 23, 2026
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