Energy Sistem Hoshi ECO Bluetooth Headphones

Audio Speaker diameter: 40 mm Type: Dynamic Impedance: 32 Ω Frequency response: 20 Hz ~ 20 kHz Connectivity Voice assistant (Google, Siri): Yes Bluetooth version: 5.3 Bluetooth - Class: 2 Bluetooth - Frequency band: 2.4 GHz Bluetooth profiles: A2DP / AVRCP / HFP / HSP Bluetooth range: 20m Compatible Bluetooth codecs: SBC Bluetooth - Maximum output power: < 20,00 dBm Battery Charging system: USB type-C Type: LiPo Capacity: 400 mAh Voltage: 3.7 V Battery life - Normal use: 23 h Charging time: 1.5 h Microphone : Hands-free: Yes Microphone - Type: Built-in Microphone - Sensitivity: -38 dB ± 3 dB (@1 kHz) Frequency response: 10 Hz ~ 10 kHz Power supply : Connectors: USB type C Cable length: 50 cm Compatibility: Mac / PC Windows / Smartphone / Tablet / TV Playback control: Yes Volume control: Y