1 Ultra-Slim Erasable LCD Writing Board Scientific Calculator - 10-Digit, Dual Power (Solar Lithium Battery), Ideal for Math, Physics Geometry, with Electronic Components, back to school supply Item Description Battery Properties: Solar BatterySolar Battery Type: Lithium BatteryContain Electronic Components/Motherboard: Contains electronic components or motherboard Battery Properties: Solar Battery Solar Battery Type: Lithium Battery Contain Electronic Components/Motherboard: Contains electronic components or motherboard Payment We accept payment only through PAYPAL Shipping We ship products worldwide through standard express courier service, it will reach within 7 to 10 days to abroad buyers, we ship the product after recieved clear payment and give full information about shipment to the buyer Return We accept product return within 7 to 21 days from delivery date but product should be in original position and not in damaged condition,the return shipping charges will be buyer responsibility