Siemens S10 D, a historic mobile phone introduced in 1997. This model is notable for being the world's first mobile phone with a color display, although it was limited to four colors (red, green, blue, and white). Key Specifications Release Year: 1997. Network: Designed for the D-Netz (GSM 900 MHz). Display: 97 x 54 pixels, capable of showing five lines of text. Battery Life: Approximately 10 hours of talk time and up to 100 hours of standby. Weight: Approximately 185 grams. Based on the visual features, the device in the image appears to be a Siemens S4 mobile phone from the mid-1990s. This specific unit features a distinctive "wood" or root wood (Wurzelholz) finish. During this era, such premium wood-look casings were often associated with high-end car integration packages for luxury vehicles like Porsche, Mercedes-Benz, and BMW. Key Identification Details Model: Siemens S4 (often referred to as S4 Power). Era: Originally released around 1994–1995. Notable Features: It was one of the early GSM mobile phones and frequently used as a built-in car phone for premium automotive brands. Secondhand no tested battery might voll charge. Without Original Box and charger Shipping DHl