"A feature-rich smart lock built around a giant battery, but with entry-level security certification."
The 15,000mAh battery is unusually large because it needs to be; powering a direct-to-WiFi radio is far more draining than the hub-based systems used by competitors. Expect to recharge a few times per year, not once every '16 months'.
This lock is for a rental property manager or homeowner who values remote access management and multiple entry methods above all else. Its feature set is strong for the price, if you accept the trade-offs on physical robustness. It's also suitable for a low-security interior door, like a home office.
Anyone for whom physical, brute-force security is the primary concern should look for a lock with a BHMA Grade 2 or 1 rating. Users who prefer the universal availability of standard AA batteries over a proprietary rechargeable pack will find this model's ecosystem restrictive.