THINKPAD X1 ACTIVE NOISE CANCELLATION HEADPHONES

DESCRIPCION TECNICA:
HEADPHONE HEADSET DRIVER : 40 MM FREQUENCY RANGE : 20 HZ ? 20 KHZ IMPEDANCE : 32 AND #937; MAX. INPUT POWER : 30 MW SENSITIVITY (SPL) : 111 DBM ? 3 DBM THD+N AT -3 DBFS : -77 DB DYNAMIC RANGE : 110 DB BATTERY SUPPORT : 15 HOURS (PLAYBACK); 20 HOURS (WITH ANC OFF) BATTERY CHARGE TIME : 2 HOURS MICROPHONE THD+N AT -3 DBFS : -85 DB DYNAMIC RANGE : 95 DB FREQUENCY : 50 HZ - 8 KHZ ACTIVE NOISE : ANALOG ANC, UP TO -30 DB, CANCELLATION (ANC) 4 X MICROPHONES SUPPORTS ANC OFF/ : LEVEL 1 = -20 DB; LEVEL 1/LEVEL 2 LEVEL 2 = -30 DB ENVIRONMENT : 2 X DEDICATED NOISE CONTROL (ENC) DIGITAL MICROPHONES NOISE SUPPRESSION : UP TO 45 DB SIGNAL-TO-NOISE RATIO : UP TO 19 DB (SNR) IMPROVEMENT INTERFACE BLUETOOTH? 5.0, USB-C (USB-C DIGITAL AUDIO STANDARD) BLUETOOTH? PROFILE A2DP, HFP, AVRCP BLUETOOTH? AUDIO FORMAT SUPPORT SBC / AAC / APTX / APTXLL / HP1.7 / MSBC CABLE LENGTH USB-C TO USB-C : 1.3 M BRAIDED CABLE USB-C TO USB-A : 1.3 M RUBBER CABLE HEADPHONE TYPE ON-EAR DESIGN, FOLD-FLAT ENGINEERING MICROPHONE TYPE BOOMLESS WEIGHT STARTING AT 0.43 LBS (195 G) SUPPORTED OS ? WINDOWS 10 ? ANDROID? 8.0 OR LATER ? IOS 10.0 OR LATER SHIP GROUP (WHAT?S IN THE BOX) ? THINKPAD X1 ANC HEADPHONE ? CARRYING CASE ? 1.3 M USB-C TO USB-C BRAIDED CABLE ? 1.3 M USB-C TO USB-A RUBBER CABLE ? WARRANTY ? INSTRUCTION MANUAL WARRANTY 1 YEAR