Info

Specifications
Sony MDR-ZX770BN

General Data	Driver unit Microphone Magnet Closed Type Frequency Sensitivity Usage time Impedance Cord type Cord length Plug Weight Color	40 mm dynamic – Dome type Electret Condenser Microphone Neodymium Closed Dynamic 8Hz-22000Hz (Wired), 8–22,000Hz 98 dB/mW, power off 100 dB/mW (Wired) Max. 13 Hours (BT ON/NC ON) 23ohms(Power on) (Wired); 50ohms(Power off) (Wired) 1.2 m Gold-plated L-shaped Stereo Mini 245 grams Black, blue
Features	Charge time Volume control	Simplified Bluetooth connectivity with NFC One-touch Ultra-clear Digital Noise Cancelling technology 13 hours of battery life Beat Response Control reduces heavy bass distortion Lightweight for ultimate music mobility

Image: http://keeweeshop.com/product/headphone-bluetooth-sony-mdr-zx770bn/

Specifications
Sony MDR-1RNC

General Data	Driver unit Microphone Magnet Diaphragm Frequency Sensitivity Capacity Impedance Cord type Cord length Plug Weight (g) Color	50mm, dome type In-line remote and microphone cord for iPod/iPhone/iPad Neodymium Liquid Crystal Polymer Film Diaphragm 5-24,000Hz Power ON 103 dB/mW, OFF 100 dB/mW 100mW Power ON 51 ohm, OFF 19 ohm (at 1kHz) PCOCC 1.2 m Four-conductor gold-plated stereo mini plug 330 grams Black, gray, green
Features		Created with leading music industry figures 50mm Liquid Crystal Polymer Film diaphragm Pressure-relieving cushions tailored to fit the ears Design that seals off the ear to make sure bass is heard Micro-USB cable (1.5m)

Image: http://www.bhphotovideo.com/c/product/935882-REG/sony_mdr1rnc_mdr_1_noise_cancelling.html

Specifications
Sony MDR-1RBT

General Data	Driver unit Diaphragm Magnet Full Type Frequency Sensitivity Usage time Impedance Cord type Closed type Plug Weight Color	40mm(HD driver unit), dome type Liquid Crystal Polymer Film Diaphragm Neodymium 4-80,000Hz PCOCC Yes 297 grams Black, gray, green
Features		Created with leading music industry figures Improved HD driver unit and vent design 40mm Liquid Crystal Polymer Film diaphragm Pressure-relieving cushions tailored to fit the ears Smartphone-compatible with built-in mic

Image: http://www.pcadvisor.co.uk/review/headphones/sony-mdr-1rbt-review-3432761/

Specifications
Sony MDR-1ADAC

General Data	Driver unit Microphone Magnet Beat response Frequency Sensitivity Dynamic type Impedance Cord type Cord length Plug Weight Color	40 mm Headband, On-ear 4–40,000Hz (digital), 4–100,000Hz (analog) Yes 40Ω at 1kHz 1.2 m 300 grams Black, gray
Features		Foldable ear cups for easy portability Beat Response Control reduces heavy bass distortion High-Resolution Audio compatible Responsive Liquid Crystal Polymer driver for clarity 8 hours of battery life

Image: http://www.johnlewis.com/sony-mdr-1adac-full-size-headphones-with-built-in-usb-dac-amplifier-black/p1783636

Specifications
Lenovo C2

Network	2G 3G 4G	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 HSDPA 850 / 900 / 1900 / 2100 LTE band 2100, 1800, 850, 2600, 900, 800, 2300, 2500
Size	Dimensions Weight Display	143 x 71.4 x 8.6 mm (5.63 x 2.81 x 0.34 in) 139 gram IPS LCD capacitive touchscreen, 16M colors 720 x 1280 pixels, 5.0 inches (~294 ppi pixel density)
Memory	Phonebook Call records Internal Card slot	Yes Yes 8/16 GB, 1 GB RAM microSD, up to 32 GB
Data	GPRS EDGE 3G/4G WLAN Bluetooth Infrared port USB	Yes Yes HSPA, LTE Cat4 150/50 Mbps Wi-Fi 802.11 b/g/n, hotspot v4.0 with A2DP, LE microUSB v2.0
Features	OS CPU Messaging Alert Browser Radio GPS Games Camera Video Colors Java	Android OS, v6.0 (Marshmallow) Quad-core 1.0 GHz Cortex-A53 SMS, MMS, Email, Push Mail, IM Vibration; MP3, WAV ringtones HTML5 FM radio Yes Yes 8 MP, autofocus, LED flash 720p@30fps White, black - Loudspeaker - Dual SIM (Micro-SIM, dual stand-by) - Multitouch - 3.5mm jack - 1/4" sensor size, geo-tagging, touch focus, face detection - Active noise cancellation with dedicated mic - Accelerometer, proximity (sensors) - MP4/H.264 player - MP3/WAV/eAAC+/FLAC player - Photo/video editor - Document viewer - Clock - Calendar - Alarm
Battery	Stand-by Talk time	Standard battery, Li-Ion 2750 mAh Up to Up to

Image: http://www.gsmarena.com/lenovo_c2-pictures-8193.php

Specifications
Sony MDR-1A

General Data	Driver unit Microphone Magnet Beat control Frequency Sensitivity Usage time Impedance Cord type Cord length Plug Weight (g) Color	40 mm dynamic – Dome type Omni directioal Neodymium Headband, Over-Ear 3–100,000Hz 105 dB/mW 48Ω Detachable 1.2 m Gold-plated L-shaped stereo mini 225 grams Black, gray
Features	Charge time Volume control	Yes High-Resolution Audio compatible Responsive Liquid Crystal Polymer driver for clarity Smartphone-compatible with in-line remote mic Beat Response Control reduces heavy bass distortion Swivel ear cups for easy portability

Image: https://www.amazon.co.uk/Sony-MDR-1A-Prestige-Overhead-Headphones-Black/dp/B00N3WWG4U

Specifications
Sony MDR-Z7

General Data	Driver unit Microphone Magnet Beat Control Frequency Sensitivity Usage time Impedance Cord type Cord length Plug Weight Color	70 mm dynamic – Dome type Electret Condenser Microphone Neodymium Headband, Over-ear 4–100,000Hz 102 dB/mW 70Ω(1kHz) Y-type (Detachable) 2 m (balanced-connection cable), 3 m (connecting cable) Gold-plated mini 335 grams Black, gray, green
Features		High-Resolution Audio compatible Responsive Liquid Crystal Polymer driver for clarity Beat Response Control Dual layer cords, 2m and 3m length Stable neck-band all-metal design

Image: https://www.amazon.com/Sony-MDRZ7-Hi-Res-Stereo-Headphones/dp/B00NBMHT7Q

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