Features: For A rechargeable battery can be used (not included), allowing users to use it without external power supply, making it suitable for outdoor recording and mobile applications. Environmentally friendly and energy saving , which help to minimize the environmental impact and is in line with the concept of sustainable development. Can recharging and used multiple times, providing economy and practicality and avoiding the hassle of frequent battery replacement. Provides a stable 48V voltages to ensure compatibility with condenser microphones and ensure optimaled performances. With LED indicator shows battery power status, making it easy for users to know how much power is left and to recharging in time to avoid interruptions in use. Specifications: Power: 48V Power Supply Material: Metal Color: Black Size: about 108x87x37mm/4.25x3.42x1.45in For Detachable 18650 (not inculded battery） Package Includes: 1PC 48v power supply (battery not included） note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.