The 9H T11 offers a nominal frequency of 32.768 kHz to with a standard frequency tolerance (at 25°C) of +/- 10 ppm or 20ppm. Series resistance is 90 kohms maximum.
TXC also offers RTC oscillators with a 32.768kHz clock signal for tight tolerance requirement. The series are: 7WZ (7.0x5.0mm), 7CZ (5.0x3.2mm) and 7XZ (3.2x2.5mm). These oscillators are ideal for high end product applications which require a very precise clock.
Product website: http://www.texim-europe.com/...