Sigma RECO 81 LINK or Magicshine SEEMEE R300: which should you choose?
Comparison of the two bike radars using our catalogue's scoring criteria, value by value. Scores are relative to all the models we have analysed.

Sigma RECO 81 LINK
Main drawbackSeatpost mounting needs space beside your saddle bag
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Magicshine SEEMEE R300
Main drawbackNarrow detection angle focused behind the bike
Check price on Amazon → Read the full analysis →Our verdict based on your priority
- Priority: “Detection range”Sigma RECO 81 LINK 9 / 10 vs 7.4
- Priority: “Battery life”Magicshine SEEMEE R300 9.5 / 10 vs 9
- Priority: “Detection angle”Sigma RECO 81 LINK 9.3 / 10 vs 6.8
By criterion
| Criterion | Sigma RECO 81 LINK | Magicshine SEEMEE R300 |
|---|---|---|
| Detection range | 9 advantage | 7.4 |
| Battery life | 9 | 9.5 advantage |
| Detection angle | 9.3 advantage | 6.8 |
| Equipment | 9.5 | 9.5 |
A gap of less than half a point does not count as an advantage: our scores are relative to the catalogue, and using them to pick a winner would imply a level of precision we cannot offer.
Side-by-side specs
| Specification | Sigma RECO 81 LINK | Magicshine SEEMEE R300 |
|---|---|---|
| Detection range | 160 m | 140 m |
| Battery life | 30 h | 100 h |
| Light output | Not provided | 300 lm |
| Detection angle | 60 ° | 35 ° |
| Charging time | Not provided | 2,15 h |
| Battery capacity | 1350 mAh | 3350 mAh |
| Connectivity | Bluetooth, ANT+ | Bluetooth, ANT+ |
| Lighting modes | Daytime flashing, Night flash, Peloton, Steady | Daytime flashing, Night flash, Peloton, Steady |
| Features | Braking detection | Automatic on/off |
| Ingress protection rating | IP67 | IPX6 |
| Power supply | Built-in rechargeable battery | Built-in rechargeable battery |
| Mounting location | Seatpost | Seatpost |
| Compatible seatpost shape | D-shaped, Round, Aero | Round, Aero |
| Charging connector | USB-C | USB-C |
Figures published by manufacturers and retailers, compiled in our reviews. “Not provided” means the figure could not be verified.
Which is right for you?
Sigma RECO 81 LINK
Leads on 2 criteria of 4 compared
- Detection angle: 9.3/10 vs 6.8/10 (60 ° vs 35 °)
- Detection range: 9/10 vs 7.4/10 (160 m vs 140 m)
Magicshine SEEMEE R300
Leads on 1 criterion of 4 compared
- Battery life: 9.5/10 vs 9/10 (100 h vs 30 h)
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Comparison based on published specifications and our scores, calculated using the same criteria for every model. Our methodology →
Frequently asked questions
Which is rated higher, Sigma RECO 81 LINK or Magicshine SEEMEE R300?
Sigma RECO 81 LINK scores 9.2/10, compared with 8.5/10 for Magicshine SEEMEE R300, using the same scoring criteria.
Which wins on “Detection angle”?
Sigma RECO 81 LINK wins on “Detection angle”: 9.3/10 compared with 6.8/10 for Magicshine SEEMEE R300. Recorded values: 60 ° versus 35 °.
Which wins on “Detection range”?
Sigma RECO 81 LINK wins on “Detection range”: 9/10 compared with 7.4/10 for Magicshine SEEMEE R300. Recorded values: 160 m versus 140 m.
Which wins on “Battery life”?
Magicshine SEEMEE R300 wins on “Battery life”: 9.5/10 compared with 9/10 for Sigma RECO 81 LINK. Recorded values: 100 h versus 30 h.
