Welcome to our store! 1. Made of ABS, not easy to wear and durable. 2. The remote control range is greater than 8M (machine models are different, the distance is different). 3. High-quality remote control Compatible with your computer speakers. 4. This is a high-quality remote control Compatible with computer speakers. 5. Suitable Compatible with Logitech Z‑5500 Z‑680 Z‑5400 Z‑5450. Shell material: ABS Color: Black Remote control range: more than 8 meters (depending on the machine model) Battery model: 2 * AA (not included) Product size: about 139 * 49 * 25 mm / 5.5 * 1.9 * 1.0 inches Weight: 44 grams Packing list: 1 * Remote control Note: Please note that both new and old models of this product are shipped randomly, please make sure you don't mind before ordering. Satisfaction Guarantee: Customers are our top priority. If you find any problems with the product, please contact the seller immediately. We strive to provide satisfactory after-sales service.