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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Description

🚴‍♂️ Light up your ride, own the night!

BRILLIANT 300 LUMEN OUTPUT - Two LEDs with optimized lens angles deliver visibility up to 3000 meters—ride with confidence day or night.
UNMATCHED 260 VISIBILITY - Wide-angle illumination ensures you're seen from nearly every direction—because your safety is non-negotiable.
RUGGED SLEEK ALUMINUM BUILD - Lightweight, durable, and rainproof IPX6 design means this taillight is ready for any weather or adventure.
SMART BRAKE AMBIENT SENSORS - Automatically activates brake light and adjusts brightness to surroundings for ultimate safety and convenience.
RAPID USB C RECHARGE LONG RUNTIME - Full charge in 2 hours with a powerful 1600mAh battery that lasts up to 200 hours in low power mode—never get caught powerless.

The Magicshine SEEMEE 300 is a cutting-edge bike taillight featuring 300 lumens brightness, smart brake and ambient light sensors, and 260° visibility. Its IPX6 waterproof aluminum housing ensures durability in all weather, while a fast USB-C recharge and 1600mAh battery provide up to 200 hours runtime. Designed for safety and style, it’s the ultimate rear light for professional cyclists and urban riders alike.

Specifications

Color	Black
Brand	Magicshine
Material	Aluminum
Power Source	Battery Powered
Water Resistance Level	Waterproof
Item Weight	0.12 Kilograms
Mounting Type	Seat Mount
Product Dimensions	1.37"L x 1.25"W x 2.51"H
Number of settings	5
Brightness	300 Lumen
Auto Part Position	Rear
International Protection Rating	IPX6
Manufacturer	Magicshine
Item Package Dimensions L x W x H	4.09 x 2.83 x 1.65 inches
Package Weight	0.12 Kilograms
Item Dimensions LxWxH	1.26 x 1.38 x 2.52 inches
Brand Name	Magicshine
Warranty Description	24 months
Model Name	SEEMEE 300 Bike Taillight
Suggested Users	unisex-adult
Number of Items	1
Model Year	2023
Included Components	SEEMEE 300 Taillight

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