Sena
Mesh Wireless Crew Communication Headset - Single Add-On
Mesh Wireless Crew Communication Headset - Single Add-On
SKU:ExpandM-01
- 400 m / 0.25 miDirect Mesh range
- 1.6 km / 1 miWith 6+ users
- 10 hoursTalk time
- UnlimitedOpen Mesh users
Couldn't load pickup availability
- Ships in 1–5 business days
- 30-day returns
- Advice from real cruisers
A 100 g (3.53 oz) behind-the-neck Sena EXPAND Mesh headset for hands-free group communication. Open Mesh has no practical user cap and six or more users can relay up to 1 mi (1.6 km).
See specifications, comparisons, and FAQs
Shipping & lead times
Shipping & lead times
We're a small team of boaters and we pack orders within 1–5 business days (no weekend or holiday packing). You'll get an email with tracking as soon as a label goes on your box.
Specialty items — fire extinguishers (dangerous goods) and low-stock or built-to-order gear — can take longer; the product description will say so. On a tight timeline or meeting your boat somewhere specific? Contact us and we’ll work out the fastest way to get gear to you.
International orders ship DDU: local duties, taxes, and customs fees are the buyer’s responsibility. Full details in our shipping policy.
Returns & refunds
Returns & refunds
30-day returns from the date of purchase. Items must be unused, in the original packaging with all cables and accessories, with proof of purchase.
Contact us before shipping anything back — we’ll send the return form that must accompany your return. Fire extinguisher and lithium battery items carry a $15 administrative fee on returns.
Read the full refund policy.
Ask a cruiser before you buy
Ask a cruiser before you buy
Everyone here is a current or past cruiser — we’ve docked short-handed, re-rigged at anchor, and chased 12V gremlins too. Not sure this is the right fit for your boat? Send us your question before you order and we’ll give you a straight answer.
Low-profile Mesh communication for a growing crew
Always-open group conversation
EXPAND Mesh provides hands-free full-duplex communication with other Sena Mesh Intercom devices. Users can leave range and rejoin without rebuilding a Bluetooth pairing chain.
Comfort without blocking awareness
The 100 g (3.53 oz) behind-the-neck design sits over the ears while allowing awareness of surrounding sound. Its low neckband works with many hats, glasses, and climbing helmets.
Two users have up to 400 m (0.25 mi) of published open-terrain range. With six or more users relaying, Sena publishes up to 1.6 km (1 mi). Bluetooth 5.2 also supports calls and audio.
Choose the pack size
| Listing | Headsets | Use | Current Shopify price |
|---|---|---|---|
| Single add-onYou are here | 1 | Grow an existing Sena Mesh crew | $ 199.00 |
| Pair | 2 | Two-person starting set | $ 376.00 |
| 4-pack | 4 | Small work or training crew | $ 739.00 |
| 6-pack | 6 | Meets Sena's 6+ user relayed-range condition | $ 1,075.00 |
Every listing uses the same EXPAND Mesh headset; quantity changes. Current price and availability above come from Shopify rather than fixed copy.
Full specifications
| Intercom | Mesh Intercom 3.0 |
|---|---|
| Range | Up to 0.25 mi (400 m) between users; up to 1 mi (1.6 km) with 6+ users |
| Users | Open Mesh: 6 channels and virtually unlimited participants; Group Mesh: 24 |
| Battery | Up to 10 hours talk time |
| Charging | 3 hours |
| Bluetooth | Bluetooth 5.2; HSP, HFP, A2DP, AVRCP |
|---|---|
| Audio | Advanced Noise Control and HD speakers |
| Fit | Low-profile behind-the-neck band; 37 mm speakers; 85 mm boom microphone |
| Weight | 100 g (3.53 oz) |
| Water rating | No IP or weather-resistance rating published by Sena |
What this listing includes
Headset quantity
One EXPAND Mesh headset.
Current bundle contents
The quantity above is guaranteed by the selected listing. Refer to the current product gallery and packing list for any case, charging leads, or small accessories included with that pack.
Compatibility and support
How many headsets do I need?
One per person. Two make a complete conversation. The published relayed range of up to 1.6 km (1 mi) requires six or more users positioned to relay the Mesh signal.
Will these talk to Bosun, N2R, or TuffTalk M?
Yes. Open Mesh is designed to communicate with Sena Mesh Intercom devices. Keep firmware current and contact us before mixing older Mesh generations.
Can a Bluetooth-only headset join?
Not directly. The active Bluetooth-to-Mesh adapter can bridge compatible equipment; contact us with the exact model before ordering.
Is EXPAND Mesh waterproof?
Sena does not publish an IP or weather-resistance rating for EXPAND Mesh, so this page does not claim one. Keep it dry. Choose NautiTalk Bosun for an IPX7 headset that floats.
Where can I get setup help?
See Sena EXPAND Mesh support for manuals, apps, and updates, or contact Cruising Solutions.
Outfitting a larger crew? Tell us how many people and how far apart and we will size the setup.