Wildlense has come with a woolen cap that gives you warmth and many other features. This cap has Bluetoothwoolen and wireless microphones. In winters this will be the best option when you are going outside. You can easily connect your mobile phone with this wireless cap for listening to songs or for the call. You can carry this woolen cap easily. Charge for 2 hours and easily use 8-10 hours. So the backup wise it’s good.