Did you specify the 128x64 display in Adafruit_SSD1306.h?
Can you try this bitmap and see if you get any different results?
Your bitmap is weird because of the repeating patterns and the huge amount of data. I believe that a 128x64 display should require 1024 bytes of data for a full bitmap; you've got 7776 bytes in that array.
#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#define OLED_RESET 12
Adafruit_SSD1306 display(OLED_RESET);
const unsigned char WatchWave [] PROGMEM=
{
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};
void setup()
{
Serial.begin(9600);
display.begin(SSD1306_SWITCHCAPVCC, 0x3C); // initialize with the I2C addr 0x3D (for the 128x64)
// init done
display.display(); // show splashscreen
delay(2000);
display.clearDisplay(); // clears the screen and buffer
// miniature bitmap display
/***display.drawbitmap(XPOS, YPOS, Name of Bitmap, WIDTH, HEIGHT, Color (1=white))***/
display.drawBitmap(0, 0, WatchWave, 128, 64, 1);
display.display();
delay(1000);
display.clearDisplay();
}
void loop()
{
}