Features:
1) Remote control with customized functions and designs
2) WD-51: 15.9 x 4.8 x 2.5cm, Weight: 48.8
3) WD-50: 16.5 x 4.9 x 2.6cm, Weight: 51.9g
4) WD-50A: 13.2 x 5.1 x 2.0cm, Weight: 42.3g
5) WD-49A: 13.5 x 4.4 x 2.3cm, Weight: 42.1g
6) Batteries: 2 x AAA