| Brand | WHOOP |
|---|---|
| Model | WHOOP 4.0 |
| Case Size | 28 mm |
| Band Material | Nylon |
| Compatible Operating System | Android, iOS - Apple |
| Band Color | Black |
| Case Material | Plastic |
| Case Color | Black |
| Features | Fitness Tracker |
Check the listing for details. WHOOP 4.0 Fitness Tracker with Two Black Nylon Bands Straps Wearable Android IOS. Condition: Used. Listed at 49.99 USD. Brand: WHOOP Model: WHOOP 4.0 fitness tracker sensor with black nylon wrist band Compatible operating systems: Android and iOS via the WHOOP app Band material and color: breathable black nylon strap with adjustable buckle-style closure Case material and color: black plastic sensor module with integrated optical sensor cluster marked "WHOOP 4.0" and "ALWAYS ON" Packaging: includes original band gift box and inner insert labeled "FRESH 4.0 BAND" with printed instructions to gift your 4.0 to friends or family Additional markings: FCC ID: 2AJ2X-WS40 Keywords: WHOOP 4.0 strap, fitness tracker wearable, replacement band, activity monitor, health tracking