Tone Generator, Battery: (1) 9 V Battery (Included), Battery Life: 70 HR Typical, Tone Frequencies: Dual: 1116 and 919 HZ, Single: 919 HZ, Tone Power (600 Ohm): Hi: 7 DBM, Lo: 1 DBM, Dimensions: 2.7 In X 2.6 In X 1.1 In, Weight: 4 Oz (Including Battery)