ANT+/BTLE heart rate monitor
HRM bought from Halfords (of all places) end of last July, been primary HRM since then - pleasantly surprised by it - been solid on ANT+ and BTLE channels, picks up quickly on all the apps I use on desktop, laptop and phones, no noticeable drop-outs or spikes, battery still going, comfy and easy to keep clean. Not much more to say really, just works. £10 collected or post at cost. Selling as basically got given a Tickr and already have a spare.