1 Gigabit SFP Transceiver WDM-B, Multi-Mode MM/LC/550M/TX:1550nm RX:1310nm, 0ºC~70ºC

1 Gigabit SFP Transceiver WDM-B, Multi-Mode MM/LC/550M/TX:1550nm RX:1310nm, 0ºC~70ºC

Marsoni

M251S

$43.00

Get it in 3 business days with 1 day shipping. Friday, May 29

1 Gigabit SFP Transceiver WDM-B, Multi-Mode MM/LC/550M/TX:1550nm RX:1310nm, 0ºC~70ºCThe SFP WB M is the high performance and cost effective module for serial optical data communication applications specified for multimode of multi rate from 125M to 1. 25 Gb s. It operates with +3. 3V power supply. The module is intended for multimode fiber, operates at a nominal wavelength of Tx: 1550nm Rx: 1310nm and complies with Multi Source Agreement (MSA) Small Form Factor Pluggable (SFP). Each module consists of a transmitter optical

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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

Bought this model twice. Digital display failed on both, the first within the return window, the second just after. Timex customer "service" said to ship it back for a repair estimate, pay for the repair, and then it would take up to three months once payment was made. I said thanks, but I'll leave a bad review and get a Casio sooner.

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Reviewed in the United States on May 23, 2026

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Hernan Amadeo

Los Angeles, US

★★★★★ 4

Buenas relación calidad precio

Color: Green

Bueno y bien precio.

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Reviewed in the United States on February 16, 2025

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VSH

Cuba, US

★★★★★ 3

Very nice everyday watch

Color: Black-Red/Digital/Black

A watch with a lovely design. Really good quality silicone strap. The price is a bit high.

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Reviewed in the United States on January 14, 2026

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Stacey

Grantham, US

★★★★★ 5

You'll love it

Color: Black-Red/Digital/Black

simple and easy to set up

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Reviewed in the United States on March 6, 2026

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andrew

Dallas, US

★★★★★ 5

Great value watch with all the basic functions.

This is a solid watch for the money. I think if you are looking for a training watch that doesn't break the bank, this is a good option. I looked at a ton of options, and I know there are some even cheaper entry level options, but this Ironman was a little bit of a step up in appearance and quality. To me it's worth it to get this over something in that $20 to $30 range. The Ironman was more stylish and less bulky than a lot of those options. This watch has a nice sized face that makes it easy to see without being so large that it's too much. There are some of these entry level sports/military watches that are just enormous. I'm not a huge guy so this was a much better option. One thing I am really liking is how flexible the strap is. The material has a nice give to it making it a very comfortable watch to wear. I've had some watches in the past where the bands were just too stiff and made the watch very uncomfortable. It's easy to understand and operate. I didn't even read the manual and had everything figured out after 5 or so minutes. Unless you are really going to step up and get a GPS smart watch in the $200 and up range, this watch is a great option.

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Reviewed in the United States on September 15, 2018