The SEEMEE 400 is a completely upgraded version of the SEEMEE 300: 360° follow light + high-transparency optical light guide strip to achieve no blind spots and strong warning; upgraded with FTR multi-light interconnection and team synchronized flashing technology, and also supports intelligent brake warning/vibration wake-up, ANT + bike computer pairing and light control, empowered by multiple core black technologies, making it smart and convenient, and doubling the riding safety efficiency.

Features:

Dual high-power LEDs output up to 400 lumens for strong road presence and added safety.
Signature OptiTracing light projects a 360° glowing halo for all-around safety.
Powered by a 1600mAh battery, delivering up to 107 hours of runtime.
ANT+ integration enables direct control via Garmin, Wahoo, and Hammerhead computers.
FTR LightSync enables remote sync between front and tail lights for streamlined use.
Smart brake sensor triggers a full 400-lumen alert for added stopping safety.
PelotonSync Flash syncs with nearby taillights for coordinated group visibility.

Mode	Lumens		Time H: Min
	Main Light	Optitracing Light	Runtime
Low	15 Lm	15-0 Lm	19:00
High	90 Lm	90-0 Lm	08:30
Night Flash	45-75 Lm	60 LM	08:30
Day Flash	400-0 Lm	N/A	18:00
Eco Flash	30/0 Lm	N/A	107:00

What you get:

Long-Lasting Battery: A Massive 1600Mah Battery, Delivering Up To 400 Lumens And 107 Hours Runtime.
360° Optitracing Light: Casts A Red Beam In Every Direction-Stay Visible From All Sides. No Blind Spots.
Ant+ Compatibility: Ant+ Compatibility For Seamless Sync With Cycling Devices Via Your Bike Computer.
Smart Brake Sensor: Built-In Motion Sensor, Automatically Switches To Maximum Output When You Hit The Brake.
Pelotonsync Flash: Ride As One, Flash As One. Syncs Up For Stronger Group Visibility And Safety.
All-Weather Ready: Ipx6 Waterproofinghandlesrain, Splash, And Storm-Ride On.
Twist & Lock: Quarter-Turn And Done-Mount To Your Saddle Rail Or Seatpost In Seconds.
Lockout Function: Activate Transport Mode To Keep It Off. No Accidental Switch-Ons, No Wasted Power.
Fast Charging: Mode Memory Function, Easy-To-Read Indicators And Usb-C Rechargeable, 2.5 Hour Fast Charging Keep It Shining Strong.

Specifications:

Max output: 400 Lumens
Battery Capacity: 37.V 1600mAh
Runtime: 8.5-107 Hours
Charging Time: 2-2.5 Hours (5V,0.3-1A)
Optitracing Light: 360º
Body material: Aluminium Alloy
Waterproof Rate: IPX6
Warranty: 2 years serial number required please note it down

Whats in the box:

SEEMEE400
Saddle Mount
Seat Post Mount
USB C Cable
Manual

Magicshine SEEMEE400 Smart Rear Light