X Rocker Office Sound Chair 2.0 Bluetooth in Black and Grey features 2.0 Bluetooth technology and a premium lithium ion battery that charges the chair for 4+ hours of use. Built with two stereo speakers hidden in the headrest, this desk chair on rolling wheels provides the full X Rocker sound immersion experience while giving you the look, comfort, and practical usage of a desk chair. Durable and attractive vinyl seating surface. Ergonomic seating position with arms and base. Tilt and swivel. Hidden speakers in headrest. Great for reading, playing video games, watching TV, relaxing. With separate volume and bass controls. Will play music from any source with headset or RCA outputs. Assembly required. Shipping time approximately 5-15 days normally.