Amazon.com: MaxLLTo 6ft Extra Long AC Power Replacement Adapter for Casio WK-110 WK-200 WK-210 WK-3700 Keyboard Charger Power Supply Cord : Musical Instruments
Amazon.com: T-Power Charger for Casio Keyboard 12V DC WK-1630 ad-12ul WK-3700 Piano PRIVIA PX-100 PX-110 PX-320 PX-400R PX-500L WK3800 WK-3700 Portal Electronic Piano Keyboard Power Charger Supply : Musical Instruments
Casio WK-3800 Product Specs and Info
Casio WK-3700 | Musician's Friend
Gator Cases Deep Keyboard Case fits Casio WK-3500, WK-3700, WK-3800 Ke - Pixel Pro Audio