It is what it is , I own one .. and before that has a 4D toplight senso .. which is the same light, minus the Dynamo power input .


Recent buy a B&M Lyt N had no standlight but it was sold cheap.. [Lyt BN is to be the entry level Brompton factory Option a pre wired 2nd input with a plug is included)

there are upscale Lyt Models adding a feature and then more Lumens as the price goes up

if you are4 throwing more than $35 US retail at a wired LED headlight then you get more features ..


The same goes with taillights the 4D Toplight senso plus may be off the latest featured offerings , Its been made for a while,

but if left in the Senso Mode it will turn on when you move and stay on for a few minutes when you stop..

It just takes You turning the switch ... you can also turn it off .. the power is the 2AA batteries ..



Toplight line plus has a button to push to turn it off . it has 2 LEDs and a Fresnel lens to spread out the light , 2 of my bikes run those.


what did you buy , Paul?