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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16
For Your Every Summer RSVP, with Code: SUMMER15
Description
Sammy-C21 V1.0 Duet3D ModuleThis is the Duet3D version of the Sammy C21 module with a preloaded Duet3D bootloader. Sammy C21 V1. 0 is a versatile and very compact small (just 18x38mm size!) microcontroller board with the SAMC21G18A microcontroller, CP2102 USB UART converter, and two CAN2. 0 CAN FD standard compatible CAN bus transceivers. All relevant controller signals are available on pin headers. 16MHz XTAL and 32768Hz TOSC watch crystal are included. The Atmel Microchip SAM

Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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- Standard Shipping : 3-10 business days
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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
4.2 ★★★★★
Based on 343 reviews
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Product Reviews
★★★★★ 5
Nice shirt.
Color: Black, Size: XX-Large
Good neck height, not too high, firm neck grip without the choke feel. Clean look when wearing under an open shirt or looks good alone, Soft feel against the skin, and it washes well, no pulling or color fade. semi-form-fitting on the body, but not tight for the size. priced well.
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Reviewed in the United States on May 25, 2026
★★★★★ 5
T-Shirts
T-Shirts are very nice. They run small. Order 1 size up
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Reviewed in the United States on December 31, 2025
★★★★★ 3
Mock turtle neck sagged and did not fit well.
Shirt is well made. Collar not so much. Sagged and did not fit well. Donated to Goodwill.
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Reviewed in the United States on April 29, 2026
★★★★★ 5
A Difficult to Find T-Shirt
These T-Shirts are nice. A super difficult to find. The manufacturer calls it a mock-turtle neck (MTN). But the collar height is actually a bit shorter than the traditional MTN, which is great. It's closer to a regular T-Shirt that comes all the way to the neckline. And very somt a comfortable. This is the perfect style of T-Shirt to wear under a sportscoat, if desired. Or under a shirt where you want the T-Shirt to show for contrast. Just the right look.
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Reviewed in the United States on February 17, 2026
★★★★★ 1
Sugerencia
Me llego pero el pedido tiene un fuerte mal olor a agua tipo de químico que aún lavandolo no se se va el mal olor . primera ves que me pasa esto
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Reviewed in the United States on March 7, 2026
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