Bluetooth 5.4 compatible open-ear earphones, lightweight and comfortable to wear. - Brand: HIDISC - Bluetooth Version: 5.4 - Supported Profiles: HFP, A2DP, AVRCP - Bluetooth Codec: SBC - Frequency Band: 2.402-2.480GHz - Playback Frequency Band: 20Hz-20kHz - Maximum Communication Distance: Approximately 10m - Battery Capacity: Single ear 30mAh / Charging case 300mAh - Speaker: 13mm - Playback Time: Approximately 3-4 hours (at 60% volume) - Charging Port: USB Type-C Due to thickness, the earphones will be removed from the box, and only the main unit, charging cable (Type-C cable), and instruction manual will be shipped. Thank you for your consideration.