The Citizen Promaster Tsuno Chrono Racer (model AV0070-57L) is a bold men's chronograph watch that pays homage to the iconic 1973 Citizen Bullhead design. Featuring a hand-assembled movement, this modernized retro watch is housed in a 45mm stainless steel case and bracelet with an azure blue and black dial with luminous hands and markers and a power reserve indicator.

Powered by Citizen's proprietary Eco-Drive technology, the watch runs entirely on light — any light source — eliminating the need to ever replace a battery. The caliber E210 movement offers a full suite of complications including a 1/5-second instantaneous flyback chronograph measuring up to 12 hours, a tachymeter scale, alarm, date display, and power reserve indicator. The watch is protected by an anti-reflective spherical sapphire crystal offering superior scratch resistance, and the stainless steel bracelet features a fold-over clasp with hidden push buttons. Water-resistant to 200 meters (20 bar / 666 ft), making it suitable for swimming, showering, and snorkeling.