smart day/night function does not seem to work. How can I enable this mode?

I have found that light automatically switches between smart day or night. I own both the seemee 200 and 300 and I ride early morning before sunrise until after sunrise. When I select the brake mode by long pressing the power button until the light illuminates solid and then I select the mode I want; the light will automatically turn off the optitracing light after sunrise and be in day mode. The optitracing light only illuminates in night mode.

Can the mount fit my aero seatpost?

Yes sir. Also a seat mount is available if you have a bontrager seat or a new specialized. They have screw holes underneath for the special $10 mount

Will this attach to a road bicycle race Helmet? Pulsing effect looks great to help drivers accurately judge position of cyclist

The SEEMEE 300 is not designed to be attached directly to a road bicycle race helmet. It is primarily meant to be used on all standard saddles or seat posts.

Magicshine, I know you have an updated Allty 1500S coming out next month, is there any upgraded taillights (SeeMee) being released soon as well?

The SEEMEE 300 is now our newest taillight!

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SEEMEE 300 Bike Taillight

Product ID: 677560198

Details

Auto Part Position
Rear
Brand
MagicShine
Brightness
300 Lumen
Colour
Black
International Protection Rating
IPX6
Item Weight
0.12 Kilograms

💡300 lumens max brightness

💧IPX6 waterproof rating

🔋5 light settings for versatile use

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HK$1540

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Description

🚴‍♂️ Light up your ride, own the road!

ALL WEATHER READY - IPX6 waterproof design ensures your safety light performs rain or shine.
LIGHTWEIGHT DURABLE - At just 0.12 kg, it’s easy to mount without bulk, built tough for daily commutes.
BRILLIANT 300 LUMENS GLOW - Stand out with intense rear visibility that commands attention on every ride.
CUSTOMIZABLE LIGHTING MODES - Five distinct settings let you tailor your visibility to any environment or mood.
TRUSTED AMERICAN CRAFTSMANSHIP - Proudly made in the USA, combining quality with cutting-edge bike safety tech.

The Magicshine SEEMEE 300 Bike Taillight delivers a powerful 300-lumen output with five adjustable light modes, ensuring maximum rear visibility. Engineered with an IPX6 waterproof rating and lightweight lithium construction, it’s designed for durability and all-weather reliability. Perfectly seat-mounted and crafted in the USA, this taillight is a must-have for safety-conscious cyclists who want to ride confidently day or night.

Specifications

ASIN	B0C58TNZDD
Auto Part Position	Rear
Best Sellers Rank	#51,621 in Sports, Fitness & Outdoors ( See Top 100 in Sports, Fitness & Outdoors ) #123 in Cycling Taillights
Brand	MagicShine
Brand Name	MagicShine
Colour	Black
Country Of Origin	USA
Customer Reviews	4.3 out of 5 stars 657 Reviews
International Protection Rating	IPX6
Item Type Name	Taillight
Item Weight	0.12 Kilograms
Light Output Maximum	300 Lumens
Manufacturer	Magicshine
Material	Lithium
Material Type	Lithium
Model Number	SEEMEE 300
Mounting Type	Seat Mount
Number of settings	5
Power Source	Battery Powered
Water Resistance Level	Waterproof
Whats In The Box1 - Whats In The Box3	SEEMEE 300 Taillight

Reviews

A**R

Bad quality rear light from Magic Shine

Zero star, got this rear light from a local dealer, failed within few weeks and no proper customer support. You will REGRET buying it

4.04.2026

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HK$1540

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hong Kong.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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