The Sinn 144 Collection is a family of some of Sinn’s traditional watch designs. Their continuing popularity is a testament to the excellent craftsmanship and timeless design behind these timepieces. Sinn is known for only using the highest quality materials and finest German engineering to create their watches, and the 144 is no exception with their automatic movements and robust cases. Sinn has combined some of their best technologies in this collection to create a series of reliable and sturdy watches. 

Core Features of the Sinn 144 Collection: 

• The Sinn 144 collection is a family of some of Sinn’s most popular watches.
• Each of the watches in the collection features a tachymeter and pulse scale. 
• The watches all use scratch-resistant sapphire glass to protect the dial. The glass is treated to be anti-reflective on both sides. 
• The watches have a transparent case back made of sapphire glass that has been treated to make it anti-reflective on the interior. This allows the wearer to observe and enjoy the movement.
• The 144 watches are all water and pressure-resistant to 20 bar, meeting the technical requirements for waterproofness, as set out in standard DIN 8310. The screw-fastened case backs and screwable crowns aid the water resistance. The watches are also resistant to low pressure. 
• Each of the watches is powered by automatic movements. 

Model Specifications 144.066-BRACELET: 

• This watch features a 41mm case made of bead-blasted stainless steel. 
• The matte black dial features hands and indices coated with a luminescent colour. 
• Ar-Dehumidifying Technology enhances functional readability and freedom from fogging. 
• Functions on the watch include hours, minutes, subsidiary seconds hands, a date display, a day of the week display, a chronograph, a tachymeter and a pulsometer scale. 
• The sub-dials showcase a 12-hour counter, a jumping 30-minute counter and a stopwatch second hand in the centre. 
• The watch is powered by a Concepto C99001 self-winding mechanism. It uses 25 bearing jewels and 28,800 semi-oscillations per hour to power the watch. The movement also features a seconds stop function and is anti-magnetic as per DIN 8309. 
• The watch is finished with a bead-blasted stainless steel two-link bracelet.