New updated design, louder audio, Increased battery life - Up to 16 hours. Includes: 4-CLP1010e one channel Radios, 4-Rechargeable Lithium Ion Batteries, 4-Single Unit Battery Chargers, 4-Earpiece Audio Accessories, 4-Belt Clip Holster, 4-User Manual, 4-Quick Reference Guide. Operates with a Range of up to 100,000 sq. ft. and/or 10 floors. Durable - Meets MIL STD810 C, D, E, F & G. Enhanced glow ring for better user experience - Improved Earpiece for Easy Connection