Product Description

The Citizen Promaster SKY BY3005-56G Geo Trekker is a professional pilot watch designed for those who travel the world. Combining aviation-inspired design with advanced technology, this watch delivers outstanding precision, durability, and global functionality.

A distinctive feature of this model is the UTC rotating disc hand located at the 6 o’clock subdial. As the disc completes one full rotation every 24 hours, it works together with the city ring to indicate approximate world time across the Northern Hemisphere. The typography used for the city names and disc numerals is inspired by historical maps and aviation charts from the 17th century, giving the watch a unique intellectual and vintage exploration aesthetic.

The enlarged dial and bezel improve legibility, while the carefully shaped case reduces weight and emphasizes a slim profile. A combination of matte hairline finishing and polished mirror surfaces on the bezel slopes and push-button guards creates a refined contrast in the design. The case back is engraved with a map of the Northern Hemisphere, highlighting its global theme.

Powered by Citizen’s Eco-Drive technology, the watch converts light into energy, eliminating the need for battery replacement. It also features radio-controlled timekeeping, automatically receiving standard time signals from Japan, China, the United States, and Europe to ensure exceptional accuracy.

With the convenient Direct Flight function, users can quickly adjust to local time when traveling internationally.

Key Features

• Eco-Drive solar powered movement (no battery replacement required)
• Radio-controlled timekeeping (Japan / China / USA / Europe)
• Unique UTC rotating disc world time display
• Aviation slide rule bezel for pilot calculations
• Direct Flight world time adjustment
• Sapphire crystal with anti-reflective coating
• Stainless steel case and bracelet
• 200m water resistance
• Luminous hands and markers for low-light visibility
• Screw-lock crown for enhanced durability
• Engraved Northern Hemisphere map on case back

Specifications

Brand: Citizen
Series: Promaster SKY
Model: BY3005-56G
Movement: Eco-Drive Caliber H864 (solar powered)

Case Size: 46.0 mm
Case Thickness: 11.5 mm
Weight: 180 g
Case Material: Stainless steel (grey plating)

Crystal: Sapphire crystal with anti-reflective coating
Water Resistance: 200 meters (20 ATM)
Magnetic Resistance: JIS Type 1

Band Material: Stainless steel bracelet
Clasp: Three-fold push clasp
Band Width: 22 mm
Wrist Size: 120 – 205 mm

Accuracy: ±15 seconds per month (without signal reception)
Power Reserve: Approx. 2.5 years (power save mode)

Functions

• Radio controlled time synchronization (JP / CN / US / EU)
• Automatic signal selection
• Scheduled and manual signal reception
• Perpetual calendar
• Day & Date display
• 24-hour display
• Direct Flight time zone adjustment
• World time (26 time zones)
• UTC display
• Daylight saving time adjustment

Citizen Perfex Multi 3000 System
• Magnetic resistance (JIS Class 1)
• Shock detection system
• Automatic hand position correction

• Power reserve indicator
• Charge warning function
• Overcharge prevention
• Power save mode