iTWire - Sony launches two new headphone models: WH-CH720N and WH-CH520
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 Announces Two New Headphone Models - STG Play
Sony releases affordable WH-CH720N & WH-CH520 wireless headphones — Aaron x Loud and Wireless
Sony Announces Two New Headphone Models - STG Play
The Walkman Blog: Sony WH-CH720N and WH-CH520 leak (update 2)
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 announces two new headphone models: the WH-CH720N over-ear and WH-CH520 on-ear wireless headphones - Irish Tech News
Sony WH-CH720N and Sony WH-CH520N: Flagship technologies in budget models
Sony WH-CH720N and Sony WH-CH520N: Flagship technologies in budget models
Sony WH-CH520 Wireless Headphones to launch soon, live images revealed - Gizmochina
Sony WH-CH720N and Sony WH-CH520N: Flagship technologies in budget models
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
Sony WH-CH720N and Sony WH-CH520N: Flagship technologies in budget models