Hard to get excited about a bike light until the clocks go back. But then you need to know the Cateye AMPP 400 is 400 lumens maximum light level (which means it's pretty bright), USB rechargeable (so you can charge from your PC or laptop), has a few different modes (flashing and constant), it's light and strong and fits bars up to 35mm diameter and it tells you when it needs charging (red light when capacity is down to 20%).

It takes 4 hours to charge flat to full from a 1A USB and runs for between 2 hours (400 lumen constant) up to 60 hours (200 lumen flashing).