Gaciron CETUS-1700 Underneath Mounted Bike Light
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Model | CETUS-1700 |
Max Brightness | 1700 Lumens |
Charging Port | Type-C |
Material | Aluminum Alloy/Nylon |
Battery | 4200mAhļ¼3*1400mAhļ¼ |
Input |
5V/2.0A
|
Beam Distance
|
>200m
|
Waterproof Level | IPX6 |
Charging Time | ā2 Hours |
Max Runtime | ā24 Hours |
Size | 47.6*52.5*71mm |
Net Weight | ā181g |
DESIGN INSPIRED BY THE WHALE
Inspired by the 'black' and 'white' of whales Ā it showcases the purest contrast aesthetics in nature.
AERODYNAMIC DESIGN
The R&D team conducted repeated experiments and simulated wind resistance tests, adjusting the shape repeatedly, and finally achieved the optimal aerodynamic design. With a drag coefficient of only 0.35CD, it reduces wind resistance by more than half compared to traditional bike lights (0.8CD) ā the effect is equivalent to reducing 500g of weight during cycling.

Optical Cutoff Line for Low BeamĀ & Clear Vision in High Beam
Professional-grade high and low beam design ensures clear visibility in both lit streets and unlit roads, allowing seamless switching between urban and off-road cycling.
Ultra-Wide Light Effect
No blind spots when cornering at high speed
The light's visual range width reaches up to 30 meters,Ā ensuring a daylight-clear vision for night cycling
1700 Lumens with Six Modes
Different modes meet the needs of various road conditions
MODE | TIME |
Ultra High Steady(High and Low Beam) 1700lm |
ā2hrs |
High Steady(High and Low Beam) 900 lm |
ā3.5hrs |
Medium Steady (Low Beam) 600 lm |
ā4hrs |
Low Steady (Low Beam) 300 lm |
ā7hrs |
Breathe (Hidden Mode) 50-100 lm |
ā20hrs |
Daytime Flash (Hidden Mode) 600 lm |
ā24hrs |
WIRELESS REMOTE CONTROL
ONE-KEY SWITCHING
Easily switch between 6 light brightness levels without taking your hands off the handlebars, making cycling safer
INTELLIGENT START-STOP: SEAMLESS OPERATION
Reinventing the traditional manual switch mode, it intelligently detectsĀ riding statusāautomatically entering sleep mode after 2 minutes ofĀ stationary parking, and instantly lighting up when vibration fromĀ pushing the bike is detected.

FRONT LIGHT SPECIALLY DESIGNEDĀ
FOR UNDER MOUNTING
The sleek and quick-release overhead mounting system allows installation/dismantling in 1 second. The patented buckle design ensures stability and firmness, easily handling bumpy gravel roads.

AVAILABLE IN THREE COLORS
Easily match your bike for a perfect look.
IPX6 WATERPROOF
High Sealing Performance: ResistantĀ to heavy rain and powerful water jets
BUILT-IN LARGE-CAPACITY BATTERY
Maximum 24 hours of battery life - neverĀ let you down at critical moments.
LOCK FUNCTION / POWER INDICATOR
Suitable for long-term transportationĀ to prevent accidental activation
Ā
Lock Function: In locked state, single-click the buttonāthe battery indicator will flash quickly 3 times. Long-press the button for 5 seconds to enter locked state. Unlock Product: Complete 5 single-clicks within 3 seconds to unlock (unlocking required for first use).
Ā
Ā·Red flashingĀ 1-20%
Ā·YellowĀ light steadyĀ 21-60%
Ā·BlueĀ light steady 61-100%
TYPE-C FAST CHARGING
Faster and more stable charging, with a 75% increase in charging speed. Input current: 5V/2A, fully charged in just 2 hours.
PACKING LIST
- 1-CETUS-1700
- 2-Wireless remoteĀ control
- 3-H17 Bracket
- 4-Medium-sizedĀ screw rod
- 5-Screw
- 6-Nut
- 7-Washer*2
- 8-Wrench
- 9-GoPro Adapter
SHIPPING
The final shipping cost and estimated delivery timeframe will be available to you during checkout. Currently, we offer 3 International shipping methods which are steady and easy to track. Priority worldwide shipping, Premium ( Partial countries) and a faster Express shipping. The estimated times stated below are not guaranteed. An international package could experience delays like postal strikes or severe weather or Cov-19 situation. All shipping ways, PO Box address is not acceptable.
For some flashlights, there's a pure battery insideļ¼phone chargingļ¼,If We can not ship your packages via USPS or DHL,we'll ship your package in another way.
Note:
When you place an order for just the batteries, for easy shipping, faster and safe delivery, the batteries are placed in the flashlights.
If you donāt receive your order within the estimated time frame provided below and suspect that it might be lost in transit, please contact Flashlightgo Support ( support@flashlightgo.com ) and we can look into the order with the courier. Lost-in-transit requests must be submitted to Flashlightgo Support within 3 months of the date of shipping or before the courier archives the tracking information.
Option 1.
Express by DHL/UPS/Fedex/Aramax/SF etc ( there may be tax need to pay in this way),
The estimated time of delivery is usually 3-7 work days depending on the country. Includes detailed tracking and confirmation of delivery.
Option 2.
Premium ( 6-10days, All tax and Duty Paid),
All tax and duty are prepaid to carrier by Flashlightgo before shipping, so you dont need to pay any tax or duty when you get it.
Option 3.
Priority shipping(1-2 Weeks, average 10 days)
If we marked it is with all tax and duty paid, all tax and duty are prepaid to carrier by Flashlightgo before shipping, so you dont need to pay any tax or duty when you get it.
Learn more,Please click on Here.
To ensure that you get the desirable product, we allow a seven-day product return period. Any product return application outside this period will not be entertained.
All returned product must be unused and the original package should be kept.
Returnļ¼
We do not offer return for personal products like socks and hats or food, magazine and fragile or dangerous products The original receipt must be available for application of return.
Discount productsļ¼
No product return for discount products
Gifts productsļ¼
If the item is marked as a gift when purchased and shipped directly to you, it cannot be exchanged , refunded or warranty.
Exchangeļ¼
We only replace items if they are defective or damaged.
Exchange service are offered only to wrong deliveries or product damage not caused by client. If needed, please email to info@flashlightgo.com.
Warranty
How long is the warranty period?
Flashlightgo warrants to the original purchaser that the Product(s) shall be free of any defect in material or workmanship for a period of one year for labor and one year for parts from the date of the original order except the items listed below:
Chargers,Batteries and Other Accessories: 3 months warranty
Should the Product(s) supplied by Flashlightgo prove defective because of improper workmanship or material as reasonably determined by us, Flashlightgo agrees, at its option, to either repair or replace the Product free of charge, excluding any shipping or handling charges.
Learn more,Please click here.