iTWire - Sony launches two new headphone models: WH-CH720N and WH-CH520

Press Releases Sony Asia Pacific

Sony unveils latest wireless headphones: WH-CH720N Over-Ear and WH-CH520 On-Ear Models - TECHx Media

Sony Announces Two New Headphone Models - STG Play

The Walkman Blog: Sony WH-CH720N and WH-CH520 leak (update 2)

Sony releases affordable WH-CH720N & WH-CH520 wireless headphones — Aaron x Loud and Wireless

Press Releases Sony Asia Pacific

Sony WH-CH720N and Sony WH-CH520N: Flagship technologies in budget models

Press Releases Sony Asia Pacific

Pricing, specifications and colours of Sony WH-CH520 and WH-CH720N headphones leak online - News

Sony Announces Two New Headphone Models - STG Play

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 WH-CH520 Wireless Headphones to launch soon, live images revealed - Gizmochina

Sony Announces Two New Headphone Models - STG Play

Sony WH-CH520 Wireless Headphones to launch soon, live images revealed - Gizmochina