Haylou

The Haylou Solar Neo (LS21) is designed to be a versatile daily companion, featuring a large 1.53-inch HD colorful display that provides a broader viewing space for notifications and health data. One of its standout hardware features is the upgraded rotating crown, which allows users to effortlessly navigate through menus and switch between over 150 unique watch faces with tactile precision. The watch is powered by an advanced Bluetooth 5.3 chip, ensuring a fast, stable "one-tap" connection that enables high-fidelity wrist-based calling and real-time smart message notifications without draining the battery excessively.

Beyond connectivity, the Solar Neo serves as a dedicated "Health Guardian" and personal coach. It is equipped with a next-generation optical sensor for precise 24/7 monitoring of heart rate, blood oxygen ($SpO_2$), sleep patterns, and stress levels. For fitness enthusiasts, it supports 127 professional workout modes and includes a dedicated shortcut button to instantly enable sport tracking. With its IP68 professional water resistance and a robust battery providing up to 30 days of usage in basic mode (7 days in daily usage), this watch is built to handle everything from intense gym sessions to outdoor adventures.