Main FeaturesIn-ear Speaker designColorful Aluminium Material Super Slim and Feather LightUnique USB Charging Base with Dongle Function All kinds of Charging MethodsMulti-point Function (BH022RT) Product SpecificationsBluetooth Specification: BH022RT:V3.0 BH022C: V2.0 + EDRBluetooth Profiles Supported: BH022RT: Headset, Handsfree, Multi-point BH022C: Headset, HandsfreeOperation Range: Up to 10 metersTalk Time*: BH022RT: Up to 6 hours BH022C: Up to 3 hoursStandby Time*: BH022RT: Up to 100 hours BH022C: Up to 50 hoursDimensions(mm): L53.5 x W13.5 x H6Weight: About 6.6g * May vary due to users operation mode and device settings.