The wearable will be released on September 16 and costs $35, according to The Verge. The device is a wrist-mounted Bluetooth sensor that vibrates when a user is near Pokemon or a Pokestop.
Its vibrating function could improve users' safety while playing the game, the Wall Street Journal reports. There have been several traffic accidents as a result of users keeping their eyes focused on their smartphone screens.
Nintendo had planned to release the device at the end of July, but later pushed back the launch.
The device is currently sold out on Amazon.com (AMZN) and at Gamestop (GME), The Verge added.
Since Pokemon Go's release, its active users have dropped to 30 million from the 45 million it had in late July.
Additionally, Nintendo announced yesterday that it would partner with Apple (AAPL) to release its "Super Mario Run" game on the tech giant's App Store. "Super Mario Run" is Nintendo's first traditional game for smartphones.
Shares of Nintendo were dropping 7.02% to $33.77 in late-afternoon trading on Thursday.NTDOY data by YCharts