If you´re passionate about.IT and electronics, like being up to date on technology and don´t miss even the slightest details, buy.Wireless Headphones Aiwa HST-250BT/BK Black.at an unbeatable price. Characteristics:Hands free function.Wireless.Foldable.Built-in microphone.Removable cable.Plug and play.32 Ohm.Built-in battery.Foldable:Yes.Headphones:32 Ohm.Binaural.Range:10 m.Type:Headband.Wireless Headphones.Headphones with Microphone.Headphones with Headband.Built-in microphone:Yes.Frequency:20-20000 Hz.20 - 20000 Hz.Colour:Black.Product with plug:Yes.Type of plug:Plug EU.Connectivity:Bluetooth.Bluetooth 5.0.Connections:USB.Micro USB.Jack 3.5 mm.Type of headphones:External circumaural.Voltage:3,7 V.Material:Nylon.Includes:Cable Micro USB.Case.Cable length:1,5 m.Approx.charging time:2 hours.Compatible memory cards:Micro SD.Driver:40 mm.Maximum memory card size:32 GB.Battery:Yes.Recommended use:Calls and music.Battery type:Litio Ion.Approx.autonomy:12 hours.