A minute repeating watch tells the time both visually and audibly. A slide on the side of the case usually near the 9 will activate two hammers in the movement. These hammers strike two gongs curled within the case. First one hammer strikes a gong of lower tonality; it will count out the hours. Then both hammers will strike both gongs alternatively to count out the quarter hours after that hour and then the second hammer alone striking a gong of higher tonality will count out the minutes after that quarter hour. The repeating mechanism was developed by Daniel Quare. In 1687 he had patented a mechanism that sounded the hours and the quarter hours. The early repeaters used bells. At the end of the 18th century two bent-wire gongs became the more popular mechanism. In 1892 the first minute repeater wristwatch was produced by Omega a model with a round-shaped case.