[One Size Black] Pro Trek By Casio Prg-330-4Ajf Triple Sensor ver.3 Tough Solar Watch Altimeter Compass Limited Edition Discontinued Model Hard to Find PRG-300-1A4JF
[One Size Black] Pro Trek By Casio Prg-330-4Ajf Triple Sensor ver.3 Tough Solar Watch Altimeter Compass Limited Edition Discontinued Model Hard to Find PRG-300-1A4JF
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・Second gear stock code: ITUNDC1LM4IG (please tell us this when making an inquiry)
Manufacturer: Pro Trek By Casio
Model number: PRG-300-1A4JF
・Suggested retail price: 28,600 yen
■Size information
・Representative size: One Size
■ Color
Color: Black
■ Condition
Grade: Used D
*Grading guideline
├ New: Our original product
├ Unused: New old stock
├ Used S: Like new
├ Used A: Good condition
├ Used B: Used in good condition
├ Used C: Used and in good working order
└ Used D: Used with normal use difficulties
・Condition details・Notes:
■ Overall condition rating: 4 Signs of use are significant. *Power supply and operation have been confirmed. However, the measurement accuracy is unknown. | □ Signs of use: Small | □ Stains: Minor *Fine stains | □ Scratches: Medium *Noticeable scratches | □ Discoloration: None | □ Odor: None | □ Deterioration due to age: None
■ Catalog specifications
*The following are the specifications published by the manufacturer. We do not guarantee that the descriptions, specifications, accessories, etc., will be completely consistent with the actual product.
Introducing a new color model that stands out in the outdoor scene from the "Pro Trek" equipped with Triple Sensor Ver.3. This model incorporates the colors used in outdoor gear such as clothing and backpacks as accent colors. Equipped with a triple sensor that can measure direction, altitude, air pressure, and temperature, a direct measurement button that can measure with one push, Tough Solar, etc. This model stands out in the fashion scene while maintaining its high functionality. ■ Tough Solar (solar charging system) ■ 10 ATM water resistance ■World Time: Time display for 48 cities (31 time zones, daylight saving time setting function) + UTC (Coordinated Universal Time) ■Sunrise and sunset time display ■ Orientation measurement function: Measures 16 azimuths and azimuth angles (0 to 359°), continuous azimuth measurement (60 seconds), graphically displays north, south, east and west, bearing memory (memorizes one graphic showing the azimuth angle and recorded direction), magnetic declination correction function, azimuth correction function ■Barometric pressure measurement function (measurement range: 260 to 1100 hPa), barometric pressure trend graph display (displays the past 42 hours), barometric pressure difference graphic, barometric pressure trend information alarm (notifies you with an arrow and sound when a significant change in barometric pressure occurs) ■ Altitude measurement function / relative altimeter (measurement range: -700 to 10,000m), altitude memory (manual memory for up to 30 records of measurement date, time, and altitude), automatic recording data (maximum/minimum altitude), automatic accumulation (ascent/descent memory), 14 mountain climbing records (maximum/minimum altitude), automatic accumulation (ascent/descent memory), altitude difference measurement (-3000 to 3000m), measurement interval setting function (every 5 seconds/2 minutes) * Every 1 second for the first 3 minutes only ■ Temperature measurement function (measurement range: -10 to 60°C) ■Stopwatch (1/10 sec, 1000 hour counter, with split) ■ Timer (set unit: 1 minute, maximum set: 24 hours, measured in 1 second units) ■5 time alarms (1 with snooze function) ■ Battery indicator display ■ Power saving function (display is turned off after a certain period of time in a dark place to save power) ■ Fully automatic calendar ■ Switch between 12/24 hour display ■Low temperature resistance (-10℃) ■ Operation sound ON/OFF switching function ■LED backlight (with full auto light, super illuminator, afterglow function, afterglow time switching (1.5 seconds/3 seconds)) ■ Operating time from full charge without solar power generation: Approximately 8 months when using the functions, approximately 23 months when in power saving mode Windshield material: Mineral glass Case material: Resin Case size: 56×47mm Case thickness: 12.6mm Band material: Resin band Band Clasp: Type Buckle Arm circumference: (max) 22cm Product weight: 57g z00041521
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What is Second Gear?
We are a buying and selling store specializing in mountaineering and outdoor equipment, with a physical store located on the border of Mitaka City and Chofu City, Tokyo. Based on our extensive product knowledge, experience cultivated in the field, and data accumulated over many years, we are able to achieve overwhelmingly high prices by conducting careful appraisals and market research that take time and effort. A wide range of products, both used and unused, the latest items, vintage items, and UL garage brands, are arriving every day from all over Japan.
Second Gear Mitaka Higashihachi Store
6-56-19 Jindaiji Kitamachi, Chofu City, Tokyo
・Closed: Tuesday, Wednesday, Saturday
・Business days: Monday, Thursday, Friday, Sunday
・Business hours: Weekdays 15:00-19:00, Sundays 12:30-19:00
*If you are coming by car, please use the nearby paid parking lot.
Media Coverage
Film art cooperation/costume cooperation: You Are Beyond the Summit (starring Sayuri Yoshinaga/Non/Yuki Amami/Koichi Sato, 2025), The Hound of the Baskervilles: Sherlock the Movie (starring Dean Fujioka/Takanori Iwata, 2022), Everest: The Summit of the Gods (starring Junichi Okada/Hiroshi Abe, 2016), etc.
Coverage cooperation: Nihon Keizai Shimbun, Yama to Keikoku, GOOUT, Randonne, Begin, 2nd, Houihnam Unplugged, etc.

















