Lenovo Group Ltd launched its flagship Moto Z series modular handset on Tuesday in Beijing, to compete with Apple Inc and Samsung Electronics Co Ltd in the premium-end market.

The modular smartphone, which is only 5.2 mm thick, has high-powered magnets on its rear with which users can fasten additional equipment, including a Hasselblad camera, an extra battery, speaker, projector and phone shell.

"Moto Z undoubtedly will lead the industry change and redefine the smartphone product, which is also the most representative device after Lenovo acquired Motorola Mobility," said Yang Yuanqing, Lenovo chairman and CEO.