Sony WIH700 h.ear in 2

Weight: 40 g
Design: Intracanal
Description: Design: in-ear, device type: wireless headphones, design features: microphone, neodymium magnets, acoustic design type: closed, functions: NFC, volume control, operating time: 8
Additional Information: LDAC; Range: 10 m; iPhone support: yes; LED indicator: yes; Vibrating alert: yes; Neck lace/headband: yes; Replaceable ear pads: yes; Work profile support: AVRCP,HFP Hands-free,A2DP,Headset
Functions: NFC, volume control
Working hours: 8 h
Standby time: 180 h
Impedance: 16 ohm
Sensitivity: 103 dB
Design features: Microphone, neodymium magnets
Charging time: 2.5 h
Device type: Wireless headphones
Mount type: Without attachment
Maximum playback frequency: 40000 Hz
Minimum repeatable frequency: 5 Hz
Technology: Dynamic
Bluetooth version: 4.1
Membrane diameter: 9 mm
Type of acoustic design: Closed
Supported codecs: AAC, aptX, aptX HD
Wireless connection type: Bluetooth
Sensitivity options: DB/mW