It can be recharged. It needs 4-6 hours for charging. (the charger and rechargeable battery order will be  additional) .Rechargeable Battery Kit, Allows recharging without removing the battery. Includes environment-friendly, Cadmium-free Ni-MH battery and charger.

• It is easy and convenient to operate.
• The handle is skid proof.
• Alarm in different sounds according to different metals, When the low sensitivity on-off is pressed.
• It will alarm at different tonalities according to different sizes of the metal. You can connect an earphone to the product when you detect it in a noisy environment.
• When the voltage is lower than enough, the red alert light will be on, which indicates that you should replace the battery now.
• Two sides both alarm with flashing red light when detecting metal articles.
• Super-high accuracy and sensitivity are able to detect tiny metals(up to 0.1g).