... Color: black,white, etc 3. Lithium battery Mini Speaker, hamburger shaped, multi-colors choice PRODUCT FEATURES:1.Compatible with most devices ... 4 hours.More details about the speaker:Loudskeaer output: 2WSize:50wX50LX35H(mm)Speaker: 36mm micro speaker,4OhmFrequency response:100Hz-1kHzSingal-to-noise ... 58*23CM More hamburger speakers for your ref:... Mini Speaker, hamburger shaped, multi-colors choice