Comparison of Current (21 Jan 2024) version so of OpenSeizureDetector on PineTime and BangleJS, compared to Garmin devices.

Requirement	PineTime	BangleJS2	Android Wear	Garmin
Send Accelerometer Data to Phone at 25 Hz	Working (but may be slightly more than 25Hz)	Working	Working (but needs to be configured and checked)	Working
Send Heart Rate Data to Phone at 0.2Hz	Working ok for normal movement - errors for large movements	Unreliable	Working ok for normal movement - errors for large movements	Very Good
Report battery level to phone	Working OK	Working OK	Working OK	Working OK
Mute Alarms from Watch	Not Yet Implemented	Not Yet Implemented	Working ok	Working ok
Report Seizure Detector Status on Watch Screen	Not Yet Implemented	Not Yet Implemented	Partially implemented	Working ok
Battery Life more than 12 hours	More than 24 hours	around 15 hours	Depends on watch - some are more than 24 hours	Depends on watch - some are more than 24 hours, others are close to 12 hours
Ease of Installation	Tricky - install gadgetbridge, pair with watch, download firmware, disconnect gadgetbridge, pair with OSD	OK - update firmware from web app store	Easy: install WearReceiver on phone and WearSd on Watch, connect watch to your Google Account	OK - copy firmware file onto watch via a computer
Cost (delivered to UK)	~ £35 (incl. delivery and taxes)	£76.80	i.e. £ 109,95 (Samsung Watch 4)	£179 (VenuSQ 2)

Given the very promising results from PineTime (especially battery life and heart rate monitor performance) and the much lower cost than the other devices, I intend to concentrate on getting PineTime to being ready for release for general users. The first priority will be to sort out some simple installation instructions, then improve the user interface.