WHAT DOES 7 HOURS MEAN.20 Dec 2020 16:04
re the 1509 post at 12 34 this had occurred to me also . Is the 7 hour(or more) duration referring to once it is first used the clock starts running -ie put it on and from then it is effective until it runs out ,or is it 7 hours total usage where you can take it on and off and use it intermittently. Probably the former I would guess because how would you keep track of effective life ,but if it was the latter that to me means it would be much more attractive. Most general use would be for short trips to eg shops so 7 hours wouldnt be needed. the medical profession obviously different though
Genuine question- does anyone actually know for sure?
I continue to build a position here ....