Whoop 4.0

0 is a screenless wearable focused entirely on recovery, strain, and sleep metrics. The subscription model means you always have the latest hardware, and the band is 33% smaller than Whoop 3.

0 while adding skin temperature, SpO2, and electrodermal activity sensors. The lack of a screen is intentional — Whoop wants you checking data on your phone, not your wrist.

The waterproof design and multiple wearing options (wrist, bicep, sports bra) make it unobtrusive during any activity. The data quality for strain tracking is genuinely excellent.