For this purpose, it is unsuitable.
Small lamps with LED Q5 and 3xAAA are so bright that they dazzle very strongly any oncoming traffic.
Therefore, there is risk of accidents with oncoming traffic and if you get caught, that's expensive.
Try out the. Sets the lamp in the corner of a dark room and stand in the other corner. Or go down in the dark and positions the lamp in 10m distance. What do you see then? Exactly! Do nothing more. You close your eyes dazzled.
As Bike Lights reasonably suitable are the much darker lamps 1xAA battery which also can be found here. The holder is also available separately.