About Sony Walkman NWZ-B183F/B:-
Memory (Available capacity may vary) 4GB
FM Tuner: Yes
Input / Output Terminals: Hi-Speed USB(USB 2.0 compliant)
Power Source: Built-in Rechargeable lithium-ion Battery, USB power (from a computer via a USB connector of the player)
Recharging Method: USB-based charging
Recharge Time Approx.: 70 minutes
Maximum Dimensions (W x H x D/mm): 84.5 x 22.2 x 13.4

About Video Player NWZ-E383:-
Memory Storage Capacity: 4GB
9.9mm slim design
Integrated FM tuner
Screen Size: 1.77”
Battery Type: Lithium ion
Battery Playback Time: 30 hours
Experience superb audio quality
30 hours of endless audio on the go
9.9mm super slim design
Transfer your music files effortlessly (drag & drop)
Multi audio and video codec support
Dimensions (in cm): 17.8 x 12.7 x 2.9

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