1. High quality aluminum alloy material, hard, durable, corrosion resistance, long service life. 2. Bluetooth Connectivity 3. Up to 4096 levels of pressure sensitivity 4. With pen pressure sensing, draw straight lines and miniature letters with precision and accuracy. 5. Small size, light weight, easy to carry, can bring you more , better meet your needs. Anti-Accident Clicks Configurable Button Battery - Alkaline 1pc 2000 Hours Battery Life Requirements:Windows 8, Compatible with the following models: FLEX 4-1130-MT 80U3; for IdeaPad Flex 5 14IIL05-MT 81WS for IdeaPad Flex 5 14IIL05-MT 81X1 for IdeaPad Flex 5 15IIL05-MT 81X3 for IdeaPad Flex 5-14ARE-05-MT 81X2 for IdeaPad FLEX-14API-MT 81SS; for IdeaPad FLEX-14IWL-MT 81SQ FLEX-15IWL-MT 81SR FLEX 5-1470-MT 80XA FLEX 5-1470-MT 81C9 FLEX 5-1570-MT 80XB FLEX 5-1570-MT 81CA FLEX 6-14ARR-MT 81HA FLEX 6-14IKB-MT 81EM for 300e-MT 81FY; for FLEX 6-11IGM-MT 81A7; for IdeaPad C340-14API-MT 81N6 C340-14IWL-MT 81N4 C340-15IWL-MT 81N5 C340-14IML-MT 81TK C340-14IWL-MT 81RL C340-15IIL-MT 81XJ C340-15IML-MT 81TL D330-10IGM-MT 81MD; P1 2nd Generation-20QT MT P1 2nd Generation-20QU MT P1-20MD MT P1-20ME MT; P40 Yoga-20GQ MT P40 Yoga-20GR MT P50-20EN MT P50-20EQ MT P51-20HH MT P51-20HJ MT P52-20M9 MT P52-20MA MT P53-20QN MT P53-20QQ MT P70-20ER MT P70-20ES MT; for Lenvo Yoga 14-20FY MT; for MIIX 325-10ICR-MT 81B9 510-12IKB-MT 80XE 520-12IKB-20M3 MT Colour:space gray Material:Metal Package Contents: 1 x Bluetooth stylus Pen Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.