Sound travels through your cheekbones and leaves your ears completely open - the safest option for running and cycling on roads. Fully waterproof to IPX8 with 8 hours of playback.

Key specs • Conduction: bone, ears stay completely open • Waterproof: IPX8, survives full submersion • Battery: 8 hours playback, 10 days standby • Fit: titanium wrap-around band, 28g • Controls: physical buttons, usable with wet hands

In the box Headphones, magnetic charging cable, earplugs, carry pouch

UK notes The safest option for running on UK roads in winter dark - you hear traffic normally. Not the choice if you want isolation on a train.