| Withings Pulse O2 | |
 | |
| Tech specs | |
| Size | 43 x 22 x 8mm (H x W x D) |
| Material | |
| Charging | USB |
| Battery | Lithium-ion polymer battery |
| Battery life | Up to 2 weeks |
| Water-resistance | No |
| Weight | 8 grams |
| Sensor | Optoelectronics sensor; Green / Red LEDs; High precision MEMS 3-axis acceleromete |
| Display | OLED touchscreen |
| Screen size | 128 pixels x 32 pixels |
| Colors | Black, Blue |
| Other | |
| Activity tracking | |
| Steps | Yes |
| Distance | Yes |
| Calories burned | Yes |
| Activity | Yes |
| Floors | Elevation climbed actively |
| Sleep | Yes |
| Heart rate | Yes |
| Stress & recovery | |
| Pulse Ox | |
| Respiration rate | |
| UV exposure | |
| Skin temperature | |
| Galvanic skin response | |
| Hydration level | |
| Calorie intake | |
| GPS | |
| Running features | |
| Swimming features | |
| Other | Blood oxygen level |
| Non-fitness functions | |
| Smartphone notifications | |
| On-board music storage | |
| Connected pay | |
| LTE | |
| Links | |
| Affiliate link* | Amazon |
| Read more | Article |
**All tech specs and images on this page come from manufacturers. These may change over time as manufacturers sometimes update their devices. While we cannot guarantee absolute accuracy of information on this page, we promise to review this content regularly and do our best to bring you the most up-to-date information. To be absolutely sure of tech specs of a particular device, we recommend checking the manufacturer’s website.