Seiko Presage SPB311J1 Sharp Edged Automatic Open Heart Blue SPB311

Calibre
Calibre Type: Automatic - Powered By The Movement Of The Wearer
Calibre Function: Analogue - 3 Hands
Accuracy: +25 -15 seconds a day at normal temperature range (5°C and 35°C)
Power Reserve/Battery Life: Approx. 70 Hours Power Reserve
Battery: N/A
Calibre Number: 6R38
Display: Analogue
Case
Water Resistance: 100 Metres
Case Material: Stainless Steel
Case Size (Thickness): 11.8mm
Case Size (Diameter): 40.2mm
Case Size (Length): 47.4mm
Case Color: Silver
Band/Bracelet: Strap - Leather (calfskin)
Band Color: Brown
Glass Material: Sapphire
Crown: Pull out
Rotating Bezel: N/A
Dial Color: Blue
Layout
Hand Indicators: Hour, Minute, Seconds
Calendar Indicators: N/A
Lumibrite: Hands & Hours Markers
Dial Markers: Batons
Features
Hand Winding Capability: Yes

See-through case back: Yes