Polar Street X vs Garmin Lily 2

Polar Street X

Polar Street X

vsGarmin Lily 2

Garmin Lily 2

Polar Street XGarmin Lily 2
Display1.28-inch AMOLED touchscreen, 416 x 416, always-on option, Gorilla Glass 3Touchscreen display hidden behind a patterned lens
Body45 x 45 x 13.8 mm; 48 g with wristband, 28 g without; bio-based plastic case; 22 mm quick-release strapMetal watch case; swappable Italian leather, nylon or silicone bands
BatteryUp to 10 days in smartwatch mode; up to 43 hours with GPS in performance training mode (170 hours in eco mode); 385 mAh, replaceableUp to 5 days in smartwatch mode
PositioningGPS, Galileo, BeiDou, QZSS with assisted GPS; barometer, compass; route guidance and back to start—
SensorsPrecision Prime optical heart rate, nightly skin temperature, accelerometer, gyroscope, barometer, magnetometer; no ECG or SpO2—
ConnectivityBluetooth LE; proprietary USB-C charging cableCompatible with iPhone and Android via Garmin Connect app
DurabilityWR50 water resistance; tested to MIL-STD-810H; -20 to 50 °C operation—
Sports170+ sports and activities, Training Load Pro, Nightly Recharge, SleepWise, Sleep Plus Stages—
Performance275 MHz CPU, 5 MB memory, 32 MB storage—
ExtrasIntegrated LED flashlight with white and red light; Polar Flow app and web service included—
ColorsNight Black, Snow White, Forest Green—
GPS—Connected GPS (uses a compatible smartphone's GPS); no built-in GPS
Health—Body Battery, sleep score, heart rate, stress, Pulse Ox, respiration, women's health tracking, meditation and breathwork
Smart features—Smart notifications, morning report, incident detection via Garmin Connect (no Garmin Pay on this model)