There are a total of five sound levels continues as adjusted in the event the product is switched off and on; To enhance seem degree: Tap and keep “Fn” vital and faucet ”Correct” arrow key; To lessen audio level: Faucet and hold “Fn” crucial and faucet ”Still left” arrow crucial. https://loanbookmark.com/story14916812/the-single-best-strategy-to-use-for-wireless-bluetooth-virtual-keyboard