Features 1、1.Multi-function: The mini printer can print photos, labels, messages, lists, records, QR Code,voice note and support web printing. 2、2.Simple Connection Method: The portable printer supports wireless BT connecting with smartphone and easy to use. (Please connect the mobile phone with the printer in app interface) 3、3.Useful for Students and Parents: A perfect replacement of conventional copying by hand,help improve the efficiency of parents coaching their kids and students learning to solve problems. 4、4.Simple Connection Method: Support Wireless BT connecting with smartphone and easy to use. 5、5.Convenient for Your Life: Can record the scenery you see, record his or her sweet words, fun and practical. Built-in 1000mAh rechargeable battery, the thermal printer does not need ink cartridge when using, low operation cost. Specification Features: - High visibility LCD display screen - Port for balance plug for up to 8 cell Lipo, LiFe, or Li-Ion batteries - Can be used as Servo tester to test standard and narrow servo. - Port for discharge plug of NiMh/NiCd batteries - can be used to check the battery voltage of Lithium batteries including Lipo, LiFe, Li-Ion, as well as NiMH and NiCd batteries. - measure the voltage of both individual cells and full battery voltage, and can also indicate the highest voltage cell, lowest voltage cell and difference Specification: Item Name: CellMeter 8 Discharge Current: 1A Balance Current: 1A Battery Voltage Test Precision: 0.001V Battery Type: Can test Li-Po/Li-lon/Li-Fe(2-8S),NiCd/NiMH(4-8S) battery Servo Test Range: 1000-2000us or 500-2500us Support Battery Type:LiPo, LiFe, Li-ion, NiCd, NiMH Servo Test Mode:Manual adjustment, Auto Matic, Neutral Servo Test Frequency: 50Hz, 60Hz, 100Hz, 125Hz, 200Hz, 250Hz, 300Hz Package Include: CellMeter 8 Digital battery checker Package List