SEEMEE 400 ANT+ Taillight
"Super bright, easy to use and good mounting system. Loads of features for the price . High quality feel."
-Stephen.✔ Verified Purchase ★ ★ ★ ★ ★
● 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 | h:min | ||
|---|---|---|---|---|
| MAIN LIGHT | OPTITRACING LIGHT | RUNTIME | ||
| LOW | 15LM | 15-0LM | 19:00 | |
| HIGH | 90LM | 90-0LM | 08:30 | |
| NIGHT FLASH | 45-75LM | 60LM | 08:30 | |
| DAY FLASH | 400-0LM | / | 18:00 | |
| ECO FLASH | 30/0LM | / | 107:00 | |
- SEEMEE 400 x1
- Seat post mount x1
- Saddle mount x1
- Mounting strap x2
- Type-C charging cable x1
- User manual x1
Fast, Reliable Delivery
Global shipping to most countries with real-time tracking. Orders are processed within 1-2 business days, and most arrive within 5-10 business days. Delivery times may vary by location. Learn more
Hassle-Free Warranty
Magicshine provides a straightforward, hassle-free warranty to save you some headaches. All prouducts come with their own unique warranty. Learn more
Easy Returns & Exchanges
Please refer to our Returns and Exchanges Policy for more details on a smooth returns process. Learn more
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.
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.
Noaccidental 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
RUNTIME
8.5-107 hours
OPTITRACING LIGHT
360°
WATERPROOF RATE
IPX6
BATTERY CAPACITY
3.7V 1600mAh
CHARGING TIME
2-2.5 hours (5V, 0.3-1A)
BODY MATERIAL
Aluminum alloy
WARRANTY
2 years
Product Comparison
| MODEL |
SEEMEE400
|
SEEMEE 300
|
SEEMEE 200 V3.0
|
SEEMEE R300
|
|---|---|---|---|---|
| Max Lumens | 400 Lumens | 300 Lumens | 200 Lumens | 300 Lumens |
| Optitracing Light | ⚫️ | ⚫️ | ⚫️ | / |
| Runtime | 8.5-107 | 6-200 hrs | 5-132 hrs | 8-100 hrs |
| ANT+® | ⚫️ | / | / | / |
| Vibration Sensor | ⚫️ | ⚫️ | ⚫️ | ⚫️ |
| FTR LightSync Control | ⚫️ | / | / | / |
| Pelotonsync Flash | ⚫️ | / | / | ⚫️ |
| Brightness Sensor | / | ⚫️ | ⚫️ | / |
| Camera Recording | / | / | / | / |
| App Customization | / | / | / | ⚫️ |
| Low Power Mode | ⚫️ | ⚫️ | ⚫️ | ⚫️ |
| Lock Function | ⚫️ | / | / | ⚫️ |
| Visibility Angle | 260° | 260° | 360° | 270° |
| Waterproof Rate | IPX 6 | IPX 6 | IPX 6 | IPX 6 |
| Battery Capacity | 3.7V, 1600mAh | 3.7V, 1600mAh | 3.7V, 1000mAh | 3.6V, 3350mAh |
| Charger | USB-C | USB-C | USB-C | USB-C |
| Charging Time | 2-2.5hours(5V / 0.3-1A) | 2 hours (5V/1A) | 1.5 hrs (5V/1A) | 2.15 hrs (5V/2A) |
| Weight | 80 g | 80 g | 40 g | 109 g |
| Dimension | 64*32*35 mm | 64*32*35 mm | 32*28*43 mm | 29*34*96 mm |
| Material | Aluminum | Aluminum | Plastic | Aluminum+plastic |
| Mounting System | Quarter-turn mount | Quarter-turn mount | Quarter turn mount | Quarter-turn mount |
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