The 770A unlocks automatically via the Bluetooth on your phone, and sounds an alarm if disturbed by a third party. Battery life is claimed to be about three months and it recharges via Micro USB.
Abus has also added to its range of helmets. The new AirBreaker is designed to offer aero helmet performance without compromising on ventilation and weight, while the 2019 Scraper is a skate-style urban helmet with some clever features.
Matthew is an experienced mechanic and an expert on bike tech who appreciates practical, beautifully-engineered things. Originally a roadie, he likes bikes and kit of every stripe, and he's tested a huge variety of both over the years for BikeRadar, Cycling Plus and others. For a long time Matthew's heart belonged to the Scott Addict, but he's currently enjoying Trek's lovely aluminium Emonda ALR and having a torrid affair with a Giant Trance e-MTB. At 174cm tall and 53kg, he looks like he should be better at cycling than he actually is, and he's ok with that.