Clamp closes on a 20 mm bar and the tripod legs wrap around the frame. Three speeds is plenty.

Brightness at the lowest setting is genuinely dim. My previous clock lit the whole wall.

Two hours of pruning with it on and it still had battery. Quiet enough to hear someone talking.

Bought it for the alarm and use the timer for the oven more than the alarm.

Small, five speeds, battery display is accurate. Charged it twice in a fortnight.

Asked for the clamp range before ordering and got the exact millimetres. Arrived and fitted.