TRACK HEART RATE FOR PEACE OF MIND, FROM ANYWHERE: The Sense-U Smart Baby Sock Shoe tracks your baby's heart rate and sleep patterns from anywhere, providing you with peace of mind and helping your baby sleep better. COMPREHENSIVE SLEEP INSIGHTS AT YOUR FINGERTIPS: Understand how your baby sleeps with detailed breakdowns of their sleep cycles. See when they're in deep sleep versus light sleep, track nap times, measure sleep efficiency, and note when they wake up. 2.5K PAN-TILT-ZOOM CAMERA WITH NO MONTHLY FEE: The 2.5K PTZ camera features crystal clear 2.5K video, cry detection, background audio, motion detection and tracking, night vision, two-way talk, human detection, and more. The Sense-U 2.5K Camera is a one-time purchase with no hidden fees by using a local SD card (not included). Additionally, cloud storage is available as an optional value-added feature. ACCESS FROM ANYWHERE & SUPPORT FOR TWINS: The Base Station allows you to view your baby's sleep data from anywhere and supports monitoring for twins(2 Socks with 1 Base Station). * A 2.4G private Wi-Fi network is required for the Base Station to connect to your home internet. SECURE SHOE-STYLE DESIGN FOR BABIES 1-18 MONTHS: Designed like a tiny shoe that stays put, unlike traditional socks that babies kick off. Made from soft, breathable fabric that's gentle on delicate skin, with three size options to comfortably fit babies from 1 to 18 months old. LOW-RADIATION TECHNOLOGY: The Sense-U Baby Sock Shoe uses Bluetooth Low Energy (BLE) technology, which emits negligible radiation (1/1000th of a smartphone) and can communicate with the Base Station up to 50 feet away in open space (distance may vary depending on the surroundings). Use the Long Range Sense-U Smart Sock Shoe Baby Monitor with the Sense-U 2.5K Baby Camera for complete monitoring of your baby's heart rate, sleep movements, video, cry, and background audio, ensuring you never miss a heartbeat or movement while your baby sleeps soundly with the sock on.