Usage Tips: 1. The remote control RM-AAU135 is compatible with Sony STR-KM3, STR-KM5, AAU136, and SS-MSP7M power amplifier models. 2. Lightweight and ergonomic design ensures comfortable handling. Ideal replacement when your original remote is lost, damaged, or unavailable. 3. This is a replacement remote control with full functionality equivalent to the original, covering all standard operations. 4. No programming requiredsimply insert batteries (batteries not included), and it is ready to use. Offers reliable signal range and stable performance. 5. Compact and sleek designeasy to hold and operate. Suitable for various Sony brand models. Specification: Product name: Remote Control Model: RM-AAU135 Compatible Brand: Sony Compatible Models: Sony STR-KM3, STR-KM5, AAU136, SS-MSP7M Power Supply: 2 AA batteries (not included) Color: Black Material: ABS Package Contents: 1 x Remote Control Note: Light shooting and different displays may cause slight color variations between the image and the actual item. Measurement error allowed is +/- 1-3 cm.