Lenovo ThinkBook 14 G4 IAP Laptop 35.6 cm (14") Intel® Core™ i7 1255U 16 GB DDR4 SDRAM 512 GB SSD Wi Fi 6 Windows 11 Pro Grey Bluetooth Tag HSP Headphones Driver type Dynamic HSP Headphones Driver type Dynamic Ear coupling Circumaural Headphone frequency 20 20000 Hz Impedance 32 Ω Headphone sensitivity 99 dB Driver unit 4 cm Noise canceling type Active Noise canceling Yes Microphone Microphone type Built in Number of microphones 6 Control unit Control unit type On ear control unit Control type Buttons Battery Battery capacity 800 mAh Standby time 320 h Wireless charging No Charging source USB Continuous audio playback time (ANC off) 30 h Continuous audio playback time (ANC on) 26 h Talk time (ANC on) 26 h Talk time (ANC off) 30 h Weight & dimensions Weight 330 g Width 180 mm Height 190 mm Depth 70 mm Packaging data Package width 188 mm Package height 216 mm Package depth 90 mm Package weight 628 g Quick start guide Yes Packaging content Quick start guide Yes Pouch Yes Ear pads Yes Power USB Type C charging port Yes Supplier features Material Aluminium and the 240Hz touch scanning rate will keep you on point 7" thin and starting at 1 engineered for small business