defender Bluetooth headphones TWINS 903 white Hånd-fri Systemer

Wearing style: In-ear Product type: Headset Recommended usage: Calls/Music Product colour: White Bluetooth profiles: HSP, HFP, AVRCP, A2DP Wireless range: 10 m Bluetooth version: 5.0+EDR Bluetooth: Yes Connectivity technology: Wireless Talk time: 4 h Microphone frequency: 100 - 16000 Hz Microphone type: Built-in Microphone sensitivity: 42 dB Headphone sensitivity: 102 dB Ear coupling: Intraaural Driver unit: 1 cm Headphone frequency: 20 - 20000 Hz Sustainability certificates: RoHS, CE