GS-PT901Features: 1) Digital tire pressure gauge 2) Unit: PSI/bar3) Material: ABS 4) Battery: CR2032 Li 5) Automatic measurement 6) 5 - 99PSI 7) 0.4 - 6.8 BarsInner packing: 20pcs/blister card Card dimensions: 41 x 23 x 6cmOuter packing:200pcs/ctnCarton dimensions: 47.5 x 42.5 x 32cmGS-PT902Features: 1) Digital tire pressure gauge 2) Unit: PSI/bar3) Material: ABS 4) Battery: CR2032 Li 5) Automatic measurement 6) 5 - 99PSI 7) 0.4 - 6.8 BarsInner packing: 20pcs/blister card Card dimensions: 41 x 23 x 6cmOuter packing:200pcs/ctnCarton dimensions: 47.5 x 42.5 x 32cm producing area:China supplying capacity:50,000pcs/month