– Input: 100 – 240V, 50 / 60Hz
 – Output: 5V, 0.5A
 – Transmitter battery voltage: 3.7V
 – Receiver waterproof level: IP67
 – Battery type: lithium-ion battery (built-in)
 – Transmitter charging time: 4 hours
 – Transmitter standby time: about a week
 – Receiver charging time: 4 hours
 – Receiver standby time: about a week