Models 109ET & 112ET; <.01%/24HRS.
Models 55ET, 57ET, 1357ET & 2153ET:
Synchronous with AC power
Synchronous clock motor
10 times F.S.
99,999.9 hours
Models 109ET, 112ET: .5 watts
All other models: 2.5 watts
Models 55ET, 57ET, 2153ET: high density plastic
Models 109ET, 112ET, 1357ET: high density black
acrylic
-4°F to +149°F (-20°C to +65°C)
Models 112ET, 109ET: 2.5 oz (0.07kg)
Models 55ET, 57ET: 12.5 oz (0.35kg)
Model 1357ET, 2153ET: 13 oz (0.37kg)
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