Size (approx.): Main unit: 1.3 x 5.0 x 0.6 inches (32 x 128 x 16 mm) (2.0 oz (56 g); Magnet: 0.4 x 0.9 x 0.3 x 0.3 inches (10
Materials: Main body: ABS (acrylic nitrile, butadiene, styrene) resin; Country of origin: China
Power supply: 2 x AAA alkaline batteries (sold separately), Battery life: Approx. 6 months (maximum volume, 10 times a day / 50 seconds per use)
Battery run out display: When standby, the battery runs out of the lamp. Operation: When the magnet is away from the main unit, the working lamp will flash and notify you after 30 seconds
Volume: 65 - 72 dB/1 m, Operating Temperature Range: -10 - 45 degrees