The battery compartment is similar to that of a remote control for a television. Flip the unit over so the two buttons and speaker grill are sitting face-down on a table, with the speaker grill facing you. Place your index finger in the groove on top of the far end, and slide your finger back in the groove towards you. About half an inch back you will find a pull-tab. Insert your fingernail into this tab and pull gently towards you. This slips the catch on the battery cover out of the casing and lifts the cover up so you can replace the batteries. It is a press-fit, so to replace, simply line up the edge of the cover and snap it back into position.
