These power supplies also work in all countries which use 110-240v. You will simply need a plug tip converter from UK to your countries plug type (which we don't provide). Regulated Power. 110-240v Power Compatible.
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eBay
DC 9V Power Supply Adapter for Casio CTK-700, CTK-710, CTK-720 Keyboard Piano
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eBay
CASIO CTK-700 CTK-710 CTK-720 Keyboard. These Power Supplies Are Compatible With.
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CASIO CTK-700 CTK-710 Keyboard. These Power Supplies Are Compatible With.
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9V Casio CTK-900 CTK-720 CTK-700 Keyboard power supply replacement adapter
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eBay