This is a quick comparison of the special edition hana b4s brass edition to the standard aluminium hana v4b. These are my personaul pics not taken from any were else. If u are a hana lover or dna 40 lover in general i highly recomend this device. Oviously has all the same specs inside the two devices the difference lies in the case. The b4s is a solid brass body device. And u can tell when holding it. The single batterie brass edition is heavier with out a battery then the double batterie edition with batteries in it. My snake scale is broke or i would way them i am very curious on actual weight. The device just screams high quality in your hand. I have been using it all day out and about at work for a couple weeks now. Scratches very easily being brass which is fine to me maybe not to others. My one quistion about it is how to properly clean the inside of the device because that allso tarnishes.