About the SEEMEE 400 ANT+ Smart Taillight

Everything great about the SEEMEE 300 — turned up. The SEEMEE 400 delivers 400 lumens of 360° visibility with ANT+ and FTR LightSync integration, giving road cyclists and urban riders the smartest, most connected taillight in the lineup.

400 Lumens — 360° visibility

ANT+ / FTR LightSync — smart sync with your headlight and cycling computer

107-Hour Runtime — 1600 mAh battery

USB-C Charging — fast, universal

IPX6 Waterproof — all-weather ready

80g — lightweight

Questions and answers

Where is the SEEMEE 400 ANT+ Smart Taillight cheapest?

At Magicshine, for $64.99, as of our latest check.

What do buyers say about the SEEMEE 400 ANT+ Smart Taillight?

Rated 4.6 out of 5 from 90 ratings.

Where can I buy the SEEMEE 400 ANT+ Smart Taillight?

3 stores we checked sell it, including Magicshine, Outback Bikes, Pacos.

SEEMEE 400 ANT+ Smart Taillight

Best price now

$64.99at MagicshineChecked 1 h ago

Compared across 3 stores. Prices are checked against each store and labelled with when.

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Price facts

Best price today: $64.99 at Magicshine (checked Nov 12, 2026).
Checked at 3 stores.