1Using 2.4G wireless technology, the effective use distance can reach 12 meters 2Built-in USB receiver, plug and play, simple operation, and laser indication function 3Built-in laser head, with volume adjustment, page up and down, PPT page turning function, the perfect embodiment of the demonstration function 4Widely used, can be used for classroom teaching, PPT page turning, etc. 5Small size, easy to carry and store, convenient to use and with good performanceItem Type: Wireless PresenterProduct Size: Approx. 13.5 x 2 x 1.5cm / 5.3 x 0.8 x 0.6inProduct Net Weight: Approx.21.7 g / 0.8 oz Product Material: ABS Optional Colors: Black, white, gray Product Model: PR20 Built-in Battery: Polymer lithium battery (200mAh) Carrier Frequency: 2.402GHz-2.483GHz Number of Keys: 5 Switch: Yes Effective Distance: Within approx.12meters / 39.4ft Power Supply: 3.7V Working Current: 1 x Wireless Presenter1 x USB Receiver 1 x User Manual1 xCharging Cable 1 x Wireless Presenter 1 x USB Receiver 1 x User Manual1 xCharging Cable