Great little light sets with elastic strap. The straps makes to lights is easy to put on bike. Both watches have each 2 paragraph. Part pears. Cykellygterne have three light features: stable, slow blink, fast blink. Lights is manufactured thus to dè also lights out of ago. On it made is there one larger probability lining to you becomes seen in traffic. What gives you also better orienteringsmuligheder.Batteries: each lighting user 2 paragraph. Cr 2032 batteries. Batteries follow with. Weight: 16 gram.