◆A brand name: It is realization at realization cheers and applause, the sound pressure that is equipped with two full-range speaker speaker unit of "party booster" which can provide 15 kinds of sound effects by swatting a writing function to heap up with a palm like a percussion instrument correspondence Φ about 42mm diameter, and is higher with a correspondence atmosphere in "Music Center" which it is possible for wireless operation with "EXTRA BASS" which can enjoy of the "DSEE" which is clear, and reproduces the upper register of the compression sound source including the streaming delivery with the battery which I can regenerate by charge of the "live sound mode" which can scatter a lingering sound ingredient effectively for up to 12 hours force mode smartphone and a powerful low tone at a bath, a kitchen, the sea, the sound pressure that even is equipped with two full-range speaker speaker unit of two Φ about 42mm diameters with "a passive radiator" realizing a low tone with the usable wireless speaker presence, and is high and a powerful low tone by waterproofing dust proofing rust prevention Bluetooth model writing function Black waterproofing, dust proofing (IP67 correspondence), rust prevention SONY SONY wireless portable speaker SRS-XB22. In addition, I improve size, the placement of the front grill opening and improve an opening rate about 12% conventionally in comparison with model (SRS-XB21). The medium- and high-levels level such as vocals is clearer, too. Cheers and applause, a lingering sound ingredient are scattered effectively by DSP processing. "DSEE" supplementing the upper register which is apt to be lost by the sound source that is equipped with "a live sound mode" realizing a sense of reality that is in the live venue while a sound spreading, and being in the home, and was compressed effectively . There is little sound quality deterioration and can enjoy it by the natural sound that hears it, and is hard to be tired even if I give compressibility. It supports waterproofing and can enjoy music in a bath and the kitchen. As they are strong in dust proofing correspondence and rust, even the sea and are usable. It supports IP67. incorporates the battery which there is in reproduction, the EXTRABASS mode in the Standard mode by charge of the for 12 hours. It is correspondence to the wireless party chain which ties speaker (*) of plural correspondence to "Music Center" where there is wireless operation with a smartphone, and can swell at full blast. Connection is possible to up to 100. *Please refer to a maker site for the support model. The "party booster" which can provide 15 kinds of sound effects by beating the set with a palm like a percussion instrument correspondence. With iOS apparatus in the case of use: This plane supports than iOS 10.0. I cannot use the apparatus before iOS 9.x in Bluetooth connection.