Case: stainless steel
Size: 41.5mm
Movement: hand-wound manufacture caliber A&S5101
Power Reserve: approximately 90 hours
Water Resistance: 30m
Dial: skeleton with black ADLC mainplate and NAC-treated bridges
Caseback: sapphire crystal
Strap/Bracelet: hand-aged calfskin leather
Factory Warranty: two years

Nebula’s A&S5101 caliber is a hand-wound movement that operates at 3Hz (21,600 vph) with 90 hours of power reserve between the two mainspring barrels. Its most distinctive feature is its seven classical-style bridges mounted radially around the movement and hold most of the components together. As usual, legibility is maintained by well-proportioned hands, and the hours and minutes track along the chapter ring.