※ Ships within 3 days Black mouse with a trackball, comes with a convenient carrying case. I bought it, but I couldn't get used to it and only used it for two days. Purchase price: 7,700 yen Style: Wireless (receiver included) Brand: ELECOM Color: Black Connectivity technology: USB, 2.4GHz wireless Features: Silent buttons Movement detection technology: Optical Continuous usage time: ‎3 months Compatible devices: Windows OS and macOS devices with a USB port Other features: Silent buttons Connection method: USB, 2.4GHz wireless Size: S size Product size: 8.89 x 7.37 x 0.1 cm; 76.54 g Item weight: 2.7 ounces Other notes: There are no noticeable stains, but there may be oversights. This is a used item, so please refrain from purchasing if you are looking for a new item or if you are concerned about minor details.