<P> Software may include digital maps, schedulers and personal organizers, calculators, and various kinds of watch faces . The watch may communicate with external devices such as sensors, wireless headsets, or a heads - up display . Like other computers, a smartwatch may collect information from internal or external sensors and it may control, or retrieve data from, other instruments or computers . It may support wireless technologies like Bluetooth, Wi - Fi, and GPS . For many purposes, a "watch computer" serves as a front end for a remote system such as a smartphone, communicating with the smartphone using various wireless technologies . Smartwatches are advancing, especially their design, battery capacity, and health - related applications . </P> <P> The first digital watch, which debuted in 1972, was the Pulsar manufactured by Hamilton Watch Company . "Pulsar" became a brand name which would later be acquired by Seiko in 1978 . In 1982, a Pulsar watch (NL C01) was released which could store 24 digits, making it most likely the first watch with user - programmable memory, or "memorybank" watch . With the introduction of personal computers in the 1980s, Seiko began to develop computers in the form of watches . The Data 2000 watch (1983) came with an external keyboard for data - entry . Data was synced from the keyboard to the watch via electro - magnetic coupling (wireless docking). The name comes from its ability to store 2000 characters . The D409 was the first Seiko model with on - board data entry (via a miniature keyboard) and featured a dot matrix display . Its memory was tiny, at only 112 digits . It was released in 1984, in gold, silver and black . These models were followed by many others by Seiko during the 1980s, most notably the "RC Series": During the 1980s, Casio began to market a successful line of "computer watches", in addition to its calculator watches . Most notable was the Casio data bank series . Novelty "game watches", such as the Nelsonic game watches, were also produced by Casio and other companies . </P> <P> The RC - 1000 Wrist Terminal was the first Seiko model to interface with a computer, and was released in 1984 . It was developed by Seiko Epson and was powered by a computer on a chip . It was compatible with most of the popular PCs of that time, including Apple II, II+ and IIe, the Commodore 64, IBM PC, NEC 8201, Tandy Color Computer, Model 1000, 1200, 2000 and TRS - 80 Model I, III, 4 and 4p . The RC - 20 Wrist Computer was released in 1985, under the joint brand name "Seiko Epson". It had a SMC84C00 8 - bit Z - 80 microprocessor; 8 KB of ROM and 2 KB of RAM . It had applications for scheduling, memos, and world time and a four - function calculator app . The dot - matrix LCD displayed 42 × 32 pixels, and more importantly, was touch - sensitive . Like the RC - 1000, it could be connected to a personal computer, in this case through a proprietary cable . It was also notable in that it could be programmed, although its small display and limited storage severely limited application development . The RC - 4000 PC Data graph also released in 1985, was dubbed the "world's smallest computer terminal". It had 2 KB of storage . The RC - 4500 (1985), also known as the Wrist Mac, had the same features as the RC - 4000, but came in a variety of bright, flashy colors . </P> <P> The Timex Datalink wristwatch, was introduced in 1994 . The early Timex Datalink Smartwatches realized a wireless data transfer mode to communicate with a PC . Appointments and contacts created with Microsoft Schedule+, the predecessor of MS Outlook, could be easily transmitted to the watch via a screen blinking light protocol . </P>

Which watch came out first apple or samsung