The Seiko Prospex Speedtimer Solar SSC939P1 is part of the iconic Speedtimer line and Seiko has taken the classic design and updated it with a contemporary flair and materials. With it's 41.4mm diameter case (excluding crown) the SSC939P1 is a very comfortable and most of all stylish wrist companion. Of course the watch is water resistant to 100m and the beautiful dial is protected by a sapphire crystal. The movement powering all this is the Seiko Cal. V192 chronograph movement, which is solar powered and accurate to approximately 15 seconds per month and a battery life up to 6 months.
| Movement | Solar |
| Calibre | Seiko Cal. V192 |
| Hand winding | No |
| Automatic | No |
| Glass | Sapphire crystal |
| Date | Yes |
| Width (without crown) | 41.4mm |
| Thickness | 13mm |
| Lugs | 21mm |
| Lug to lug | 45.8mm |
| Water resistance | 100m |
| Dial | Grey |
| Bezel type | Tachymeter |
| Case material | Steel |
| Band material | Steel |
| End links | Solid |
| Caseback | Solid |
| Warranty | 2 years |