Brand Sony Colour Silver Ear placement In Ear Form factor In Ear Impedance 16 Ohm About this item To use all the enhanced features and features, please update the headphone software and the Sony | Headphones Connect app to the latest version. When the remaining battery charge of the charging case is not enough, the headset will not be initialized. Charge the charging case. The time required to fully charge the earbuds and charging case is about 2 hours When charging via USB, be sure to use the supplied USB Type-C cable. Using a different cable may prevent charging The headset cannot be charged when the computer goes into standby (sleep) or hibernation mode. In this case, change the computer settings and start charging again.