Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 14 - Jul 19
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
SF31 Bicycle Smart Brake Taillight USB Alerter Night Ride Ride Mountain Vehicle Turn LED Taillights, SF31 New Remote Control1. Press the remote control electric bell button to alert the surrounding pedestrians and vehicles to avoid 2. Anti theft alarm function, remove the remote control to arm when parking, scare off thieves 3. PC+UV material, waterproof and dustproof, high and low temperature resistance 4. Waterproof and dustproof structure, easy to install, suitable for all kinds of vehicles 5. Warning light will come on automatically when crossing tunnels or travelling
1. Press the remote control electric bell button to alert the surrounding pedestrians and vehicles to avoid
2. Anti-theft alarm function, remove the remote control to arm when parking, scare off thieves
3. PC+UV material, waterproof and dustproof, high and low temperature resistance
4. Waterproof and dustproof structure, easy to install, suitable for all kinds of vehicles
5. Warning light will come on automatically when crossing tunnels or travelling at night
6. Press the left and right turn button when you want to turn
7. Light braking, brake light will be on immediately
8. Remote control battery: built-in CR2032 button battery
9. Wireless distance: 50 to 60m in the open
10. Power supply: USB charging / built-in 18650 lithium battery
11. Function: warning + brake + steering + electric bell + anti-theft
12. Luminous flux: 160LM
13. Charging time: 7 to 8h
14. Usage time: flashing about: 70h constant light about: 35h
15. Transmitting and receiving frequency: 433.92MHZ
16. Battery capacity: 2000mah / 3.7v
17. Six warning tail light modes: slow flashing, breathing, flashing, constant light, emergency double flashing, tail light off
18. Operating ambient temperature: -40 to 60 degrees Celsius
19. Voltage: 3-4.2v
20. Current: 0.18A
21. Light source power: 15.5w
22. Dimensions: 125 x 49 x 29cm
23. Weight: 272g
Specification:
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 1124 reviews
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Product Reviews
★★★★★ 5
Great fabric & plaids! Quality construction.
Fit Type: Slim Fit, Color: Light Blue/White, Plaid, Size: X-Small, Fit Type: Slim Fit, Color: Light Blue/White, Plaid, Size: X-Small
"Light Blue White Medium Plaid" has an overall pale aqua coloring, well represented by the product photos. it's even prettier in person, with a pale purple/pink stripe and other subtle touches.
5 STARS FOR:
- Fabulous 100% Cotton fabric gets better with every wash.
- Thin (but sturdy) fabric, comfortable working outside in hot, humid SW Florida.
- OFFERING XS SLIM-FIT: Finding this XS in a slim fit Men's shirt was a game changer for me, a slim 5'7" woman with long arms, broad shoulders and slim hips. The AE Women's version of this shirt is boxy with laughably short sleeves, and is not offered in slim fit!
- Quality construction throughout. Good attention to detail, eg, matching patterns at the pocket and front placket.
- FABULOUS PLAIDS, many are unique and subtly complex.
- ATTRACTIVE COLOR OPTIONS, lots of different Blues. I've also enjoyed the paler (some might consider more feminine) colors like lavender, pink and pale aqua.
- UNBEATABLE PRICING, ESP ON SALE. At full price, these would be a good purchase. I put my favorites into the shopping cart, and wait to be notified of sale prices. I've purchased five shirts for under $10 each, by watching for sales.
PAID: $7.67 on 1/24/2026 for XS in
"Light Blue White Medium Plaid".
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Reviewed in the United States on January 29, 2026
★★★★★ 5
Comfortable and well made.
A well-made, cotton shirt, suitable for casual wear. I like to wear this in the summer untucked with the sleeves rolled up over a colored t-shirt. I found the tail of the shirt to be a bit too long to wear untucked without looking odd, so I had it shortened; now it fits perfectly. It is made of cotton, so an iron is mandatory if you don’t want to look like you slept in it, and it will get some wrinkles as the day progresses, but that’s cotton’s nature. I liked it so much I purchased a second one.
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Reviewed in the United States on January 16, 2026
★★★★★ 4
Nice shirt, runs a tad small.
Fit Type: Slim Fit, Color: Light Blue/Indigo, Plaid, Size: X-Large
I guess that slim-fit is not for my hubby and this is a little too fitted across his pooch belly. But he loved the blue color plaid. Fits well elsewhere. If you're not a flat-stomach, dont bother with slim-fit I guess.
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Reviewed in the United States on December 29, 2025
★★★★★ 5
worth the money
Fit Type: Slim Fit, Color: Light Blue/White, Gingham, Size: Medium
perfect fit and beautiful after 3 washes.
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Reviewed in the United States on May 1, 2026
★★★★★ 5
Great shirt, great price!
Fit Type: Slim Fit, Color: Navy, Tonal Floral Print, Size: Small
Bought the shirt at a steal of a price for my son. He loves it!
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Reviewed in the United States on April 16, 2026