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Gaciron CETUS-1700
Lights

Gaciron CETUS-1700

Weight181g
Year2025
CategoryLights

The Gaciron CETUS-1700 is a highly regarded 1700-lumen bike light praised for its brightness, build quality, and features like wireless remote and USB-C charging. Reviewers agree it offers excellent value, though some note issues with mounting compatibility and remote pairing.

Pros

  • Very bright 1700 lumen output, effectively illuminating dark paths and roads.123
  • Sturdy build quality with aluminum alloy or steel construction, feels durable and premium.345
  • Wireless remote control is convenient and easy to use once paired.123
  • IPX6 waterproof rating provides peace of mind in wet conditions.123
  • USB-C charging with fast charge time (~2 hours).35
  • Multiple brightness modes and settings, including low, high, and flashing, offer versatility.124
  • Beam pattern with a cut-off prevents blinding oncoming traffic, making it road-friendly.14
  • Excellent value for money, priced between $60-$125 depending on region.163
  • Vibration sensor auto on/off is a smart feature that conserves battery.1
  • Safety lock function prevents accidental activation during transport.65

Cons

  • Mount may not fit handlebars smaller than 31.8mm; one reviewer with 22mm bars couldn't install it.2
  • Remote control pairing can be finicky initially, requiring multiple attempts.63
  • Light gets very hot when used at maximum output without airflow.6
  • Battery life on maximum is around 1.5-2 hours, which may be short for long rides.645
  • When battery is low, it defaults to a low power mode that cannot be adjusted.4
  • Low beam mode may be too dim for very dark conditions.4
  • Beam width is not extremely wide, potentially insufficient for illuminating the right side when turning.2
  • Pulse mode is dim compared to other modes.2

Key Facts

  • Maximum brightness of 1700 lumens, with multiple modes including low, high, and flashing.162
  • Battery capacity is 4200 mAh, with run times up to 24 hours on lower modes and about 2 hours on maximum.635
  • IPX6 waterproof rating.123
  • Weight is approximately 181-187g.13
  • Uses USB-C charging, with full charge in about 2 hours.135
  • Compatible with GoPro mounts and includes a handlebar mount designed for 31.8mm bars.625
  • Features a wireless remote control and a vibration sensor for auto on/off.12
  • Beam pattern has a distinct cut-off to prevent glare for oncoming traffic.14

Reviews & Ratings

Jon Bergmann
06:44
CETUS-1700 Underneath Mounted Bike Light - Full Review

The reviewer tested the Gaciron CETUS-1700 bicycle light and found it to be a solid, well-built product. He praised its sturdy construction, easy attachment system, and excellent beam pattern. He noted a concern about battery life initially, but after a full test, he found it lasted about seven hours on full brightness, which he considered good. Overall, he concluded it might become his favorite light.

October 25, 2025Watch on YouTube
durianrider
03:12
Gaciron Cetus 1700 Light Review

The reviewer discusses the Gaciron CETUS-1700 bike light, which they received for free from the Chinese brand. They used it for several weeks and were impressed with its performance, build quality, and features. They highlight its narrow road-specific beam, good quality bracket, USB-C charging, and high brightness of 1700 lumens. They also mention the light's aerodynamic design claim, waterproof rating, and lock function, and they recommend it as a strong, affordable high-powered light.

July 06, 2025Watch on YouTube
BACONBUTTTIES EBIKE Review HUB
16:50
Gaciron Cetus-1700 Fantastic ebike headlight! Super illuminating Bicycle headlight 1700 lumens

The reviewer tests the Gaciron CETUS-1700 headlight, noting its extreme brightness and effectiveness in dark conditions, but encounters a mounting issue with his specific handlebars.

October 14, 2025Watch on YouTube
VDS Rides N' Ramble
10:41
Cetus-1700 Bike Light – Can It Really Turn Night Into Day?

The reviewer provides a detailed look at the Gaciron CETUS-1700 bike light, highlighting its features, performance, and practical use. They test it on an e-bike in a dark golf course and are impressed by its brightness and ability to illuminate the surroundings, making night riding safer and less intimidating.

September 16, 2025Watch on YouTube
Tom10 Crafted
11:56
Cetus 1700 Bike Light Review – Is it Better Than Syncros Nanaimo?

The reviewer unboxes and tests the Gaciron CETUS-1700 bike light, highlighting its high and low beams, remote control, and 1700 lumen output. They compare it to their previous light, the Synchros NMO, and discuss build quality, battery life, and performance in cold conditions.

January 09, 2026Watch on YouTube
JEL Reviews
09:48
Gaciron CETUS 1700 Review: 1700 Lumen SMART Bike Light w/ Wireless Remote

The reviewer praises the Gaciron CETUS-1700 bike light, highlighting its powerful 1700 lumens output, wireless remote control, vibration sensor, and anti-glare feature. He notes its high-quality construction, excellent mounting system, and reasonable price of $125 Australian.

June 12, 2025Watch on YouTube
Purchase

Where to Buy

aliexpress.com
£59.59· 3 stores
View Deals

Specifications

Attributes

Weight181g
Position on BikeFront / Headlight
Max Output (lumens)1700
Beam PatternDual (cut-off + flood)
Runtime at Max Output (h)2
Max Runtime, Lowest Steady Mode (h)7
Battery Capacity (mAh)4200
Waterproof RatingIPX6
Mount TypeUnder Computer (stacked)
Charging PortUSB-C
StVZO Approved
Remote ControlWireless (included)
Dimensions (L x W x H mm)47.6 x 52.5 x 71
ConnectivityNone

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