Features:

internal and external dual temperature measurement， with a clock display， very thin outer covering
Technical data:

Temperature range: -50 ℃ ∽ + 70 ℃;
points Debate ratio:> - 20 ℃ to 0.1 ℃， ≤-20 ℃ to 1.0 ℃
Power supply: 1.5V button battery (LR44)
Accuracy: ± 1 ℃
Machine size: 56.5 × 37.8 × 11.3mm
Display size: 46.7 × 21.2mm