Feature: 1. 5 DIGIT: This electronic scoreboard can display HOME and GUEST scores, able to +1, +2, +3, ‑1, up to 99, can display period, can +1, ‑1, up to 9. 2. WIRELESS CONTROL: Wireless remote control is easy to operate, and the control range is up to 70ft. BT APP control is also supported. 3. RELIABLE MATERIAL: The score keeper uses professional board, with large circuit area and low failure rate. Exquisite aluminum alloy frame is lightweight and reliable. 4. CLEAR LED: This scoreboard uses 4x2.3in red LED, which you can clearly see from 66ft (30m) away, 5 levels of brightness can be adjusted. 5. WIDE APPLICATION: This scoreboard could be widely used in basketball, football, volleyball, tennis and other training. Specification: Item Type: Digital Scoreboard Material: Aluminum Alloy, ABS Model: GA30B 5D4 BA Function Overview: 1. Tennis mode 2. Free score mode Power Adapter: US Plug 100-240V Product Input Voltage: DC5V Product Power Supply Mode: 1. Power adapter power supply DC5V 2. 3 x 18650 lithium ion batteries (without) Remote Control Power Supply Mode: 2 x AAA batteries (without). Package List: 1 x Digital Scoreboard1 x Remote Control1 x Bracket Board2 x Hook1 x Power Adapter1 x Power Cable2 x Hole Free Wall Nail6 x Screw2 x Wall Anchor Note: Not waterproof, not recommended for outdoor use.