Specifications: Cross-line Later: 4D Working range (diameter) to approx: 20m/30m(65ft/98ft) Levelling Accuracy: ±0.2mm/10m Self-levelling range: ±3° Levelling duration: 4s Operating temperature: -20℃~70℃ Relative air humidity, max: 90% Laser class: calss 2 Laser type F360C, S: 635nm,<1mw Laser type F360RG: 532nm,<1mw Laser type F360G: 505nm,<1mw Tripod mount: 1/4" Batteries: 2x3.7V(18650) Operating time, approx: 8h Package Included: 1*16 Lines Laser Level 1* Remote control 1* Lithium battery 1*Charger 1*Anti-fall bag 1* Standing Holder 1* Bracket connector 1* Wall Bracket 1*Instruction book 1* Sheet iron