The accuracy of heart rate monitors is improving with each passing ... you no longer need a screwdriver to swap out the coin cell battery. Generally, you can expect around a year of battery ...
While all the models here offer strong features and superb value for money, the best Bluetooth speaker overall is the Sonos Move 2. While hefty, it packs a battery that will last up to 24 hours ...
Bluetooth speakers have been a major fixture ... but even small speakers should offer over six hours of battery life. Among all the speakers I’ve tested, none have impressed me quite as much ...