Description

SPECIFICATIONS

Battery: Rechargeable lithium battery

Body Material: Aluminum Alloy

Brand Name: ROCKBROS

Certification: CE

Feature: Mini portable, USB Rechargable, Waterproof

Function: Bike taillight, Helmet Taillight, Bag Warning Light

Hign-concerned Chemical: None

Intelligent sensing: Y

Lumen: About 20 Lumen

Mode: 5 Modes

Model Number: TT30-WD Bike Rear Light

Mounting Placement: Seatpost

Name: Bicycle LED Rear Light Lantern Lamp

Origin: Mainland China

Power Supply: Battery

Size: About 3.1*2*4cm

Support Dimmer: 2-4 files

Tip: Daily waterproof, Can't be soaked

Type: Bike Light Cycling Helmet Taillight

Waterproof Level: IPX 5

Weight: About 22g













Product Details

Brand: Rockbros
Mode: 9 modes
Lumen: About 20 lumen
Charge: USB Rechargable
Battery: Rechargeable lithium battery
Waterproof: Daily waterproof, Can't be soaked
Size: About 3.1*2*4cm
Weight: About 22g
Function: Bike bicycle rear light taillight, Helmet Taillight, Bag Warning Light

Product Features

Durable, Mini portable, USB Rechargeable
9 Modes, Waterproof, Multifunction

Bicycle helmet tail light

USB charging

Product information

20 lumens high brightness, safe for night riding

9 modes (click the switch to switch modes in turn, long press to turn off the tail light)

1. Always on (100%) for about 3 hours, press the switch button to switch in sequence
2. Always on (70%) for about 3.2h, press the switch button to switch in sequence
3. Strobe mode, about 9h, press the switch button to switch in sequence
4. Slow flash mode, about 56h, press the switch button to switch in sequence
5.SOS mode, about 9h, press the switch button to switch in turn
6. The horse race flashes, about 14 hours, press the switch button to switch in sequence
7. Tai Chi flashes, about 17h, press the switch button to switch in sequence
8. Neon flashing, about 5h, press the switch button to switch in turn
9. Breathing flashes, about 8h, press the switch button to switch in sequence

ABS engineering plastic shell, lightweight, durable and corrosion-resistant

Small size and light weight

USB charging, 220mAh battery

Micro USB input
About 2h full
Red light on the meter is charging, green light means charging is complete

Multiple uses

Suitable for a variety of ROCKBROS helmets, can be used together

IP64 grade living waterproof

Note: Do not expose to rain or soak in water for a long time

Seatpost tail light installation

1. Take out the apron and tail light, and set the direction
2. Snap the apron into the tail light clip
3. After the card number, install the buckle
4. Mount the tail light on the seat tube

Helmet tail light installation

1. Tear the short Velcro off the adhesive
2. Stick on both sides of the inside of the helmet
3. The long Velcro is inserted into the clip
4. Insert both ends of the long Velcro into the helmet
5. Stick on both sides of the inside of the helmet
6. Installation is complete






Product form
  • rockbrosclothing

ROCKBROS Bike Light Waterproof Cycling Helmet Taillight Lantern For Bicycle LED USB Rechargeable Safety Night Riding Rear Light

    $17.99

    • Shipped today? Order within: Aug 22, 2025 17:00:00 -0700

      Free Shipping $69+ | 365-Day Easy Returns

      TECHNICAL Features
      Breathability
      Aerodynamic
      Weight: 135 g (M)
      UPF: 50+
      Use temperature: 25–38 ºC
      Fitting: ULTRA FIT
      Fabric & Details

      Crafted with premium Italian fabric – Carvico Revolutional™ – this jersey delivers performance and comfort in one. The main fabric is made from 88% recycled polyester and 12% elastane (125 GSM), offering quick-dry capability, 4-way stretch, and UPF 50+ sun protection.

      • Lightweight and aerodynamic design
      • Self-locking YKK zipper
      • Silicone grippers at the hem for a secure fit
      • Three rear pockets for snacks and tools
      • Reflective elements for better visibility on the road
      • OEKO-TEX® & bluesign® certified
      PRODUCT CARE
      • Machine wash cold (Max 30°C / 86°F)
      • Turn garment inside out and zip up before washing
      • Use a laundry bag whenever possible
      • Use mild detergent
      • Do not bleach
      • Do not iron
      • Do not dry clean

      Description

      SPECIFICATIONS

      Battery: Rechargeable lithium battery

      Body Material: Aluminum Alloy

      Brand Name: ROCKBROS

      Certification: CE

      Feature: Mini portable, USB Rechargable, Waterproof

      Function: Bike taillight, Helmet Taillight, Bag Warning Light

      Hign-concerned Chemical: None

      Intelligent sensing: Y

      Lumen: About 20 Lumen

      Mode: 5 Modes

      Model Number: TT30-WD Bike Rear Light

      Mounting Placement: Seatpost

      Name: Bicycle LED Rear Light Lantern Lamp

      Origin: Mainland China

      Power Supply: Battery

      Size: About 3.1*2*4cm

      Support Dimmer: 2-4 files

      Tip: Daily waterproof, Can't be soaked

      Type: Bike Light Cycling Helmet Taillight

      Waterproof Level: IPX 5

      Weight: About 22g













      Product Details

      Brand: Rockbros
      Mode: 9 modes
      Lumen: About 20 lumen
      Charge: USB Rechargable
      Battery: Rechargeable lithium battery
      Waterproof: Daily waterproof, Can't be soaked
      Size: About 3.1*2*4cm
      Weight: About 22g
      Function: Bike bicycle rear light taillight, Helmet Taillight, Bag Warning Light

      Product Features

      Durable, Mini portable, USB Rechargeable
      9 Modes, Waterproof, Multifunction

      Bicycle helmet tail light

      USB charging

      Product information

      20 lumens high brightness, safe for night riding

      9 modes (click the switch to switch modes in turn, long press to turn off the tail light)

      1. Always on (100%) for about 3 hours, press the switch button to switch in sequence
      2. Always on (70%) for about 3.2h, press the switch button to switch in sequence
      3. Strobe mode, about 9h, press the switch button to switch in sequence
      4. Slow flash mode, about 56h, press the switch button to switch in sequence
      5.SOS mode, about 9h, press the switch button to switch in turn
      6. The horse race flashes, about 14 hours, press the switch button to switch in sequence
      7. Tai Chi flashes, about 17h, press the switch button to switch in sequence
      8. Neon flashing, about 5h, press the switch button to switch in turn
      9. Breathing flashes, about 8h, press the switch button to switch in sequence

      ABS engineering plastic shell, lightweight, durable and corrosion-resistant

      Small size and light weight

      USB charging, 220mAh battery

      Micro USB input
      About 2h full
      Red light on the meter is charging, green light means charging is complete

      Multiple uses

      Suitable for a variety of ROCKBROS helmets, can be used together

      IP64 grade living waterproof

      Note: Do not expose to rain or soak in water for a long time

      Seatpost tail light installation

      1. Take out the apron and tail light, and set the direction
      2. Snap the apron into the tail light clip
      3. After the card number, install the buckle
      4. Mount the tail light on the seat tube

      Helmet tail light installation

      1. Tear the short Velcro off the adhesive
      2. Stick on both sides of the inside of the helmet
      3. The long Velcro is inserted into the clip
      4. Insert both ends of the long Velcro into the helmet
      5. Stick on both sides of the inside of the helmet
      6. Installation is complete






      Details That Define the Ride

      • Precision Knit

        Precision Knit

        Micro-knit surface ensures balanced stretch, breathability, and next-to-skin comfort.

      • Clean Stitching

        Clean Stitching

        Flatlock stitching reduces friction for smoother, longer rides.

      • Freedom Fit

        Freedom Fit

        Smooth cuffs contour gently for zero pressure on the arms.

      • Light as Air

        Light as Air

        High-tech fabric delivers a barely-there feel for effortless rides.

      • Free Shipping

        Free Shipping

        Free shipping on all orders — no minimum required

      • Customer Service

        Customer Service

        One-on-one support with 100% email response guarantee

      • Two-Year Warranty

        Two-Year Warranty

        Free repairs or replacements within the 2-year warranty period

      • Secure Payment

        Secure Payment

        Your payment is encrypted and processed securely

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