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iTWire - Sony
Sony Electronics announces two new headphone models: the WH-CH720N over-ear and WH-CH520 on-ear wireless headphones featuring Sony's Digital Sound Equipment Engine
Sony Unveils Two New Wireless Headphone Models with Digital Sound Enhancement
Sony WH-CH720N and Sony WH-CH520N: Flagship technologies in budget models
Press Releases Sony Asia Pacific
Sony WH-CH720N and Sony WH-CH520N: Flagship technologies in budget models
Wilson Airless Prototype, Sony's New Wireless Headphones, Plus Top 15 Transitional Wardrobe Pieces - IMBOLDN
Sony Unveils Two New Wireless Headphone Models with Digital Sound Enhancement
The Walkman Blog: Sony WH-CH720N and WH-CH520 leak (update 2)
Sony WH-CH520 Wireless Headphones to launch soon, live images revealed - Gizmochina
Sony Announces Two New Headphone Models - STG Play
iTWire - Sony launches two new headphone models: WH-CH720N and WH-CH520