In general, the Mi Band 1S resembles the Xiaomi Mi Band, but with some differences both inside and outside. The new unit will offer users the ability to monitor their heartbeat. The current model tracks the user's workouts and sleeping patterns. The small part that houses the electronics and sensors can be detached, allowing the device's owner to swap bands. Unlike the OG Mi Band, the small prong-like connectors on the side of the removable "terminal" can be used to charge the device.
While we do know the model number of the Xiaomi Mi Band 1S (MI XMSH02HM), what we don't know is the price of the wearable, or when it might be officially unveiled to the public. Priced at the equivalent of $12 USD, the first Xiaomi Mi Band did quite well with more than 6 million units shipped. That was enough to make Xiaomi the second largest wearable manufacturer in the world during the first quarter of 2015, with a 24.6% market share.