Tookie Mechanical Stop Watch, SXJ504 Handheld Sports
Product Overview
The Tookie Mechanical Stop Watch SXJ504 is a precision handheld chronograph designed for sports professionals, referees, and fitness enthusiasts who demand reliable, no-frills timing performance. Built with a mechanical movement and a simple one-button operation, this stopwatch delivers accurate timekeeping without relying on batteries or digital components. Its rugged construction and clear analog display make it ideal for outdoor and indoor sports environments where durability and readability are essential. Whether you’re officiating a basketball game, timing a cycling session, or managing intervals during a boxing match, the SXJ504 ensures consistent, dependable performance. This stopwatch is engineered for those who value mechanical simplicity, tactile feedback, and long-term reliability in high-pressure timing situations.
Key Features
- One-Button Mechanical Operation – Start, stop, and reset the timer with consecutive presses of the crown button. This intuitive design eliminates confusion during fast-paced events and ensures quick, accurate control without needing to switch between modes.
- Large, Clear Analog Dial – The round metallic-finish dial features bold markings and high-contrast hands for easy reading at a glance. The large display allows referees and coaches to monitor time accurately even from a distance or under bright lighting.
- Extended Timing Capacity – The minute hand completes one full revolution every 15 minutes, while the second hand rotates every 30 seconds, enabling continuous timing for up to 6 hours. This makes it suitable for long-duration sports events and training sessions.
- Robust Mechanical Movement – Equipped with 13 jewel bearings, the internal mechanism reduces friction and wear, ensuring smooth operation and long-term accuracy. The movement incorporates a stainless steel spring, single metal light balance wheel, nickel base alloy hairspring, and Kelleg vertical mechanism for enhanced precision and durability.
- Durable and Resistant Build – Constructed to withstand tough conditions, the stopwatch is dust-resistant, water-resistant, shock-resistant, and corrosion-resistant. It performs reliably in temperatures ranging from -10°C to +40°C, making it suitable for both indoor arenas and outdoor fields.
- Practical Wire Loop Attachment – A metal wire loop is integrated into the crown button, allowing the stopwatch to be securely attached to a lanyard, belt, or clipboard. This prevents accidental drops during active use and ensures the device stays within reach.
- Metronome and Rest Timing Function – Beyond standard timing, the stopwatch supports rhythm-based training, serving as a metronome for fitness gymnastics and helping athletes manage rest intervals during workouts.
Technical Specifications
- Model: SXJ504 Handheld Sports Chronograph
- Timing Mechanism: Mechanical (non-digital)
- Operation: One-button crown depression (start, stop, reset)
- Display: Round analog dial with metallic finish
- Timing Range: Up to 6 hours
- Minute Hand: 15 minutes per revolution
- Second Hand: 30 seconds per revolution
- Resolution: 1/10 second
- Dimensions: Approximately 50 x 68 x 16 mm
- Movement Components: 13 jewel bearings, stainless steel spring, nickel base alloy hairspring, Kelleg vertical mechanism
- Operating Temperature: -10°C to +40°C
- Resistance: Dust, water, shock, and corrosion resistant
- Attachment: Wire loop on crown button
Benefits & Use Cases
The Tookie SXJ504 is purpose-built for sports and competitive environments where timing precision and device reliability are non-negotiable. It is widely used by referees in basketball, soccer, and boxing to manage game clocks, round durations, and time-outs with confidence. Coaches and personal trainers rely on it for interval training, fitness gymnastics, and rhythm-based exercises, taking advantage of its metronome-like functionality. Cyclists and runners use it to track lap times and rest periods during endurance sessions. Its mechanical operation ensures it won’t fail due to dead batteries, making it a trusted tool in remote or high-stakes settings. The compact size and secure wire loop allow for easy handling during active use, whether clipped to a belt or held in hand. Its resistance to environmental factors means it performs consistently in rain, heat, or dusty conditions—ideal for outdoor sports and field events.
Important Notes
This is a mechanical stopwatch and does not require batteries. Regular maintenance may be needed over time to preserve accuracy, such as cleaning and lubrication by a qualified technician. Avoid exposing the device to extreme impacts or submersion in water beyond its resistance rating. The wire loop is designed for light-duty attachment and should not be used to carry heavy loads. Always reset the stopwatch to zero before starting a new timing session to ensure accurate readings. The product is intended for sports and training use and is not certified for official timekeeping in professional competitions unless specified by local regulations.
