Search query: sony nwa45b walkman digital music player

Product: Sony NWZS545 16 GB Walkman MP3 Video Player (Black) (Discontinued by Manufacturer)
Brand: Sony
Color: Black
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16 GB capacity for about 4,000 songs
Up to 42 hours of audio or 6.5 hours of video on a single charge
2.4-inch, 262,144-color LCD with 240 x 320 QVGA pixel resolution
Supports MP3, WMA (DRM), AAC, and Linear PCM audio formats; AVC, MPEG-4, and WMV (DRM) video formats; JPEG image files
One-year limited warranty; 1 year parts, 90 days labor

Product: Sony NWWM1Z Signature Series Hi-Res Walkman
Brand: Sony
Color: Gold
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Hear music at its best with Hi-Res Audio, expanded compatibility with headphones, enhanced Hi-Res Audio amplification with New S-Master HX and DSEE HX
Enjoy high quality wireless sound via Bluetooth with LDAC, uncompromised quality components, New, intuitive touchscreen interface with side key control
Stronger power and amp power supplies, extended Hi-Res Audio playback on a single charge, 256Gb built-in memory + Micro SD slot