Sony ECM-W2BT Help Manual page 24

Power consumption
Continuous operating time
Charging time
Operating temperature
Storage temperature
Dimensions (Approx.)
Mass (Approx.)
Design and specifications are subject to change without notice.
Approx. 0.2 W
Approx. 9 hours (with the fully charged built-in battery)
Approx. 3 hours (via a computer)
0 °C to 40 °C (32 °F to 104 °F)
-20 °C to +45 °C (-4 °F to +113 °F)
30.6 mm × 67.6 mm × 19 mm (1 1/4 in. × 2 3/4 in. × 3/4 in.) (W/H/D)
27 g (1.0 oz.)
5-026-023-11(1) Copyright 2021 Sony Corporation
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