The SwitchBot Smart Lock Pro Set offers convenient remote operation via Bluetooth and is IP65 waterproof. I didn't use this one because the Ultra version came out right after I bought it. This is a set including the lock and a fingerprint authentication pad. I am also selling another, unopened, single Lock Pro unit. If you have a double-lock front door, please consider that one as well. - Brand: SwitchBot - Model Name: Smart Lock Pro Set - Power Source: Lithium-ion Battery (5V, 2900mAh) - Compatible OS: iOS, Android - Waterproof Rating: IP65 - Size: Main Unit: 120 x 59 x 83.3mm - Weight: Main Unit: 450g, Fingerprint Reader: 130g Thank you for looking.