Model WL-210 WL-400 WL-500 Max Tying Diameter 21mm 40mm 50mm Time of Making a Knot 0.8 s 0.8 s 0.8s Battery Type 9.6V Ni-MH 3000mAh 9.6V Ni-MH 3000mAh 9.6V Ni-MH 3000mAh Charge time 1 hour quick charger 1 hour quick charger 1 hour quick charger GW of Machine 2.15kgs 2.2kgs 2.25kgs Max. Number of Tying Knots 1200ties (one Ni-MH battery) 1200ties (one Ni-MH battery) 1200ties (one Ni-MH battery) Wire Type galvanized steel wire, Annealed steel wire galvanized steel wire, Annealed steel wire galvanized steel wire, Annealed steel wire Wire 0.8mm 0.8mm 0.8mm Turns per Tie 2 turns/3turns 2 turns/3turns 3turns/4turns Ties per Coil Approx. 260ties(2turns) Approx.160ties(2turns) Approx. 100 ties(3 turns) Ties per Charge 4-5 Coils 6-7 Coils 7-8 Coils -