[DETAIL] Description: Name: HILDA2-line laser level Features: High brightness green light dual line: 505-525 nm green wave, clearly visible at 20 meters indoors, no chasing during the day. Intelligent self leveling: automatic compensation when tilting ≤ 4 °, red light flashes and stops beyond the range, even beginners will not tilt. Mini handy: The body is palm sized with a ¼ "thread at the bottom, making it easy to mount on a camera tripod, ladder crossbar, or directly on the ground. The package includes: Set LS217 / LS218 HILDA 2-line green laser instrument × 1 Wall bracket x 1 Portable cloth bag x 1 Mini tripod x 1 English manual x 1 Set LS176 / LS177 HILDA 2-line green laser instrument × 1 Portable cloth bag x 1 English manual x 1 Set LS221 / LS224 HILDA 2-line green laser instrument × 1 Portable cloth bag x 1 Mini tripod x 1 English manual x 1 Set LS215 / LS216 HILDA 2-line green laser instrument × 1 Portable cloth bag x 1 Wall bracket x 1 English manual x 1 (The battery needs to be self equipped: 2 AA batteries, pay attention to the direction of the positive and negative poles) Note: It is strictly prohibited to directly expose to the eyes. The light will come out immediately after turning on the device, and children should not approach. Before installing the battery, confirm the "+-" poles. Reverse installation will not turn on the device. Please equip green light glasses or laser receivers for outdoor strong light environments. Long term use of batteries to avoid leakage and corrosion of the movement. [ATTRIBUTES] - Battery Included: No - Hign-concerned Chemical: None - Electronic: No - Battery Included: No - Hign-concerned Chemical: None - Electronic: No - Certification: None - Is Smart Device: Yes - is_customized: Yes - Origin: Mainland China - Type: Vertical & Horizontal Lasers - Size: 79*83 * 59mm - Brand Name: HILDA - Model Number: 2Lines - Measurement Model: 2 lines - Wavelength: 635 nm - Precision: +-5mm/10m