Bulova's Surveyor collection celebrates the essence of the classic watch with a sober style and careful details. A classic automatic watch at an excellent price. 21-jewel 8215 automatic movement with power reserve of approximately 42 hours (fully charged). Vibration frequency per hour: 21,600. Accuracy range -20 to +40 seconds every 24 hours. Bulova's Surveyor collection celebrates the essence of the classic watch with a sober style and careful details. A classic automatic watch at an excellent price. 21-jewel 8215 automatic movement with power reserve of approximately 42 hours (fully charged). Vibration frequency per hour: 21,600. Accuracy range -20 to +40 seconds every 24 hours.