Specifications of this watch:

• Model Number: JC515M
• Time of Day: Analog
• Functions: Date, Stopwatch
• Water resistance: 5ATM*
• Case diameter: 45 mm
• Case material: Steel
• Case color:Black and Blue
• Type of glass: Mineral glass
• Hands: Luminous

Strap Specifications: 

• Material:Silicon 
• Suitable for wrist circumference: 160 mm - 220 mm
• Type of closure: U-Shape Buckle
• Grommet size: 18 mm
• Color: Blue

Clockwork Specifications:

• Mechanism: Chronograph
• Movement brand: Miyota
• Battery:Sony
• Battery life: 24 months
• Stopwatch: yes 

* As long as the crown is