What's In The Box: Carrying case, Headphone cable (approx. 1.2m), USB charging cable; Noise Canceling: Personal NC Optimizer, Adaptive NC Optimizer; Quick Attention: Yes; Ambient Sound Mode - Normal: Yes; Bluetooth® Version: BLUETOOTH Specification Version 5.3; Effective Range: Approx. 10 m; Frequency Range: 2.4 GHz band (2.4000 GHz - 2.4835 GHz); Profile: A2DP, AVRCP, HFP, HSP, TMAP, PBP; Supported Audio Formats: SBC, AAC, LDAC, LC3; Supported Content Protection: SCMS-T; Battery Charge Method: USB; Battery Life (Music Playback): Max. 30 hours (NC ON), Max. 40 hours (NC OFF); Battery Life (Communication Time): Max. 24 hours (NC ON), Max. 28 hours (NC OFF); Lithium Battery: Yes; Weight: Approx. 254 g; Frequency Response: 4 Hz - 40,000 Hz (JEITA); Cord Length: Approx. 1.2 m; Cord Type: Single-sided (detachable); Driver Unit: 30 mm; Impedance: 48 ohm (1 kHz, power ON), 16 ohm (1 kHz, power OFF); Magnet: Neodymium; Plug: Gold-plated L-shaped stereo mini plug; Sensitivities: 103 dB/mW (power ON), 102 dB/mW (power OFF); Wearing Style: Over Ear; Headphone Type: Closed; Frequency Response (Active): 4 Hz - 40,000 Hz (JEITA); Frequency Response (Bluetooth®): 20 Hz - 20,000 Hz (44.1 kHz), 20 Hz - 40,000 Hz (LDAC, 96 kHz, 990 kbps); Passive Operation: Yes; Ambient Sound Mode: Yes