a.b crew 360°self leveling laser level green beam 5 lines 6 points laser level horizontal/vertical cross line straight/tilt line rechargeable dust proof rubber touch keypad rotary base a.b crew a.b crew 5 lines laser level is a rechargeble laser level with lithium battery and you can use it for over 5 hours with all lines on. a.b crew laser tools can help you with decoration, wall construction, technical construction etc, which are the good assistants for refurbished yard ,professional floor ceiling landscaping crafting work etc. </br></br><b>specifications: </b></br> working distance indoor (line): 10m/30 feet</br> working distance indoor(line with detector): 15m/50feet</br> power source: 2200 mah lithium battery: one time charge, 5 hours application</br>laser: 5 lines green beam</br> leveling accuracy: ± 1/10 in at 32ft</br> self-leveling range: 3° ± 1°</br> tripod thread: 1/4'' screw hole</br> protection ip rating: ip54</br>laser class: laser class ii, output power <1mw</br>operating temperature range: 14 °f - 122 °f (-10 °c - + 50 °c) </br>storage temperature range: -4 °f - 158 °f (-20 °c - + 70 °c) </br></br><b>features</b></br>durable machine body machine body with durable and stable high intensity laser transmitter. </br>self-leveling self-leveling within 3° . alarm accurs when it inclines over 3 °. </br>5 lines 6 points with strong points for tile laying wood woring ceiling work etc. </br>lithium battery rechargeable lithium battery over 5 hours continuing working time..environment friendly power supply. </br>rotating base smooth rotating triangle base with fine tuning switch. </br>tilt lines press the out button to turn on the line lock function you will see tilt lines and alarm will not ring. </br>waterproof ip54 waterproof and dustproof.works well in construction fied.sealed rubber touch keypad keeps dust away. </br></br><b>please note: </b></br> 1.please avoid using it in bright sunlight to avoid affecting measurement accuracy. </br>2.if it beeps, that means you need to adjust the level manually until the beep stops and the laser level will do self-leveling. </br>3.laser light are harmful to eyes please keep this device away from kids.