Wireless bluetooth headphones Apro4 are completely wireless headphones with which you can connect to your devices via bluetooth connection. The headphones have a built-in microphone, so you can not only enjoy music or movies with these wireless headphones, but also use them as a hands-free device for phone calls. You can charge these wireless bluetooth headphones right from the carrying case! Features : Auto Pair - headphones automatically connect to each other, can be used as soon as they are removed from the charging case. Charge Box - after placing the headphones in the case and pressing the button on it, the case will start charging the headphones. Specifications : Model: Apro4 Battery: 35 mAh (headset) / 400 mAh (charging case) Operating time: up to 3-5 hours Limits of operation: up to 12 years Dimensions of the charging case: 44 x 53 x 21 mm Earpiece dimensions: 21 x 30 mm Bluetooth version: 5.0 In the set : 2 x Headphones 1 x Charging and carrying case 1 x USB cable