In the 1930s, Rolex made the first self-winding wristwatches, with a self-winding "pendulum" structure on the back of the automatic movement, which required extra space for it to turn freely inside the Oyster case. , the case back is designed into a curved bubble shape, which is the BubbleBack.
In fact, the name Bubble Back is not its official name, but a nickname called out by collectors. Because the middle of the case is bulging, extending up and down to the strap, it looks like a Chinese coffin from the side, so it is also called "Bubble Back" by Hong Kong people. "Coffin boy", which means promotion and making a fortune, so it is especially popular among Chinese people.
Different from the size standard of modern watches, the early watches were mainly Dress Watch, and the diameter of the watch was relatively small. Bubble Back has won the love of many collectors with its delicate casing, rich and varied surface design.
In 2022, Baltany's first watch has made some adjustments on the basis of the "coffin boy" prototype, retaining the unique shape of the "bubble back", strengthening the luminous effect, adding a new dial color combination, and the new model will be launched in early 2022.
The Baltany "Coffin Boy" has a total of two disc effects. The retro bubble back small three-pin uses the Seagull ST1701 automatic mechanical movement, and the large three-pin dial is matched with the Seiko NH38 automatic mechanical movement.
Movement: Japan NH38 Automatic Mechanical Movement
Case material: 316L stainless steel
Case back: 316L stainless steel
Glass: Sapphire Crystal with clear AR Coating
Hands: Polished, Hour And Minute Hands Filled With Swiss Luminous
Luminous: Swiss Retro Color Super-Lumi Nova
Crown: Screw-down,316L Stainless Steel
Caseback: Screw-down, 316L Stainless Steel
Strap: Leather / Leather NATO
Strap Width: 18mm
Buckle: 316L Stainless Steel
Waterproof: 200Meters(20Bar) Waterproof
Dia size: 28.5mm
Case diameter: 36mm without crown/39mm including crown
Case length: 44 mm( lug to lug)
Case thickness: 13.6mm
Lug width: 18mm
Weight: about 73g