Case Size:48 mm Also Known As:TG3874BTBBB Gender:Gents Movement:Automatic Functions:Hours, Minutes, Small seconds, Tourbillon Power Reserve:65 Hours Case Materials:Titanium Bezel:Titanium Case Back:Transparent (See-Through) Dial Color:Black Band Type:Rubber Clasp Type:Deployment Signatures:Longio Included Items:Manufacturer's Box and Papers Lugs Material:Titanium Strap Color:Black Description: With the attractive overall design producing spectacular mechanical allure, this amazing timepiece from Longio boasts the majestic tourbillon for a strong sense of traditional craftsmanship in a striking contemporary setting. Limited to 100 pieces, this fantastic model features a DLC-coated titanium case measuring 45mm in diameter and offering 30m water resistance, mounted onto a black natural rubber strap. Beating at 21,600 vibrations per hour, the self-winding mechanical movement features 19 jewels and 65-hour power reserve and it’s visible through the sapphire crystal case back. Revolving in scintillating fashion at the six o'clock position of the black dial, the astonishing tourbillon is combined with small seconds, while hours and minutes are shown via central black hands with white luminescent details.