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Review title: Disappointing
Product review: First time around, the item arrived promptly and in good condition. Worked for ~2 weeks, then the screen went blank. Changing the battery didn't do a thing. Called the seller, who responded quickly and sent a new unit rapidly to me. However, the new unit started malfunctioning within 2 days (pressing any key brought up the screen message "this key is ineffective". no improvement with resetting and turning on-off). While one malfunctioning unit may well be an accident, two is harder to understand. I'm getting my money back this time!
