Maybe the Polar Verity could be an option? I use the clip for attaching it to my goggles, or slip it under the cap. It needs a sharp push off and a sharp lap finish to record the lap, no floating gently the last few centimetres to the wall.
The Verity is the pinnacle of accuracy, though it won't reference against your speed as such (just time). Some devices allow you to pair with the Verity though which can be great.
Maybe the Polar Verity could be an option? I use the clip for attaching it to my goggles, or slip it under the cap. It needs a sharp push off and a sharp lap finish to record the lap, no floating gently the last few centimetres to the wall.
The Verity is the pinnacle of accuracy, though it won't reference against your speed as such (just time). Some devices allow you to pair with the Verity though which can be great.
Have you looked at using an Apple Watch or Garmin device Jeremy? These will record for you from the wrist and also match against your swim splits.