For sale is a 2006 41mm Omega Seamaster Professional Chronograph. It has a matte black dial, black bezel insert and a stainless steel case with screw back crown and pusher locks. It is a professional 300m rated dive watch. It has the Helium escape valve the left hand side. It is the reference 178.0515. It is presented on its original and long, 1613/934 steel bracelet, which has divers extension.
To the rear is the screwback with Seahorse logo and wave engraving. It has the inner anti-magnetic movement cover, which protects the calibre 3301 movement. It is a chronograph movement with date function, which has been recently serviced. It is keeping time to within chronometer specifications. This is a watch only example with no box or paperwork.
 
The case is a classic and deep design, in line with robust modern divers watches. It has a 41mm width, which extends to 46mm with crown and pushers. It has a depth of 15mm due to its strong case back and bezel. 
 
The bezel is good with black aluminium insert, with lume pip at 12 O’clock. It is a classic 60-minute countdown bezel. It has the scalloped bezel of the era, which has a horizontal brushing that catches the eye. 
The main section of the case has brushed finishing to the sides with a polished outer section to the twisted lug design. The inner section of the lug is brushed which provides a nice contrast, reacting with the light. It has the crown guard to the right, with the chunky Omega screwdown crown. The pushers are polished, with locks to protect from pressing during professional use. To Helium escape valve is to the left-hand side. To the rear of the lug is the etched serial number 78XXXXXX, which dates it to 2006.
 
The screwback is tightly sealed and has been pressure tested. It has a brushed finish, with seahorse logo and engraved wave pattern. Inside it is signed with the reference 178.0515.
There is the original antimagnetic movement cover protecting the movement. 
 
The calibre 3301 is inside, in good condition. It has a brushed finish to the rotor and bridges. It is an automatic column wheel chronograph, with date function, constant seconds, 60 second counter, 30-minute counter and 12-hour counter. It has a jewel count of 33 with a 55-hour power reserve. It operates at a hi-beat frequency of 28,800 BPH. It has been serviced and is working very well.
 
We like this model a lot and think it provides significant value for money, considering its design and column wheel chronograph movement too. 
 
Full condition report below. Please see the images as these compliment and aid the description provided below.
 
Dial: 
The dial is original and has some signs of ageing associated with this reference. The black base tone is good, as is the signing. The hour markers are good with original lume. The applied Omega logo has some corrosion, as does the outside of the sub-second dials. These aspects are noticeable under a magnification. 
 
Hands: 
The hands are good and original with no obvious marking. 
 
Glass: 
The sapphire crystal is original. It has some fine scratching, which is noticeable in certain lights. 
 
Crown and pushers:
The original Omega crown is in good condition, functioning as it should. The pushers are good and original and the lock works as it should.
 
Bezel:
The finish to the bezel is good, with the brushed finish having been restored. The insert has light scratching associated with age. 
 
Case:
The case is Stainless Steel and is in good condition, having had the finish restored. It has light surface scratching and some of the deeper marks from age remaining. The brushed finish remains to the sides, with polished bezel and top of lugs. 
 
Caseback:
The screw case back is Stainless Steel and is in good condition. It has light surface scratching, with the brushed sunburst finish to the edge. The Seahorse logo is good and clear.
 
Bracelet: 
It is on its original bracelet. It will fit up to an 8.5” wrist without dive extension. It has had new links added. It has been refinished. It has some of the deeper scratches remaining. 
 
Movement: 
Inside is the Omega cal 3301. It is an automatic chronograph movement. It has a jewel count of 33 and a power reserve of 55 hours. It operates at a hi-beat frequency of 28,800 BPH. 
 
The watch has been recently serviced by ourselves. The movement is keeping time to within +/- 4 seconds a day, with an amplitude of 320 degrees and a beat error of 0.0 m/s.
 
Case Dimensions:
Case width: 41mm
Case width with crown guard: 44mm
Case width with crown: 46mm 
Case length: 41.5mm
Case length lug to lug: 49.5mm
Case Depth: 15mm
Lug width: 20mm